CBSE Class 6 Science Electricity And Circuits Worksheet

Multiple Choice Questions

Question. Electrons are
(a) negatively charged particles
(b) positively charged particles
(c) neutral particles
(d) None of these
Answer : A

Question. In a closed electric circuit, current flows
(a) in the direction of flow of electrons
(b) in the direction opposite to the flow of electrons.
(c) negative terminal to positive terminal of cells
(d) None of these
Answer : B

Question. Connecting wire is made of electric
(a) conductor
(b) insulator
(c) both (a) and (b)
(d) None of these
Answer : A

Question. If a body is positively charged, then it has
(a) less number of electrons
(b) excess of protons
(c) excess of neutrons
(d) None of these
Answer : A

Question. Inside a cell current flows from
(a) positive terminal to negative terminal
(b) negative terminal to positive terminal
(c) positive terminal to positive terminal
(d) either (a) or (b)
Answer : B

Question. Electric cell converts
(a) electric energy into chemical energy
(b) heat energy into electric energy
(c) chemical energy into electric energy
(d) electric energy into light energy
Answer : C

Question. There is a force of attraction between
(a) like charges only
(b) opposite charges only
(c) both (a) and (b)
(d) None of these
Answer : B

Question. An ammeter is
(a) a combination of two or more cells.
(b) a source of current.
(c) used to control the flow of current.
(d) an instrument used for measuring the magnitude of current.
Answer : D

Question. Human body is
(a) a good conductor of electricity
(b) a non-conductor of electricity
(c) a very poor conductor of electricity
(d) None of these
Answer : A

Question. To close or open the electric circuit we use
(a) connecting wire
(b) ammeter
(c) plug key
(d) cell
Answer : C

Question. When we switched OFF an electric circuit, the circuit becomes
(a) open
(b) closed
(c) cannot say
(d) partially open
Answer : A

Question. Which of the following is the best insulator?
(a) carbon
(b) paper
(c) graphite
(d) ebonite
Answer : D

Question. To make an electric circuit a closed circuit should be provided with a bulb having a
(a) broken filament
(b) no filament
(c) its filament intact
(d) None of these
Answer : C

Question. Metal that can be used to make a connecting wire is
(a) copper
(b) silver
(c) aluminium
(d) all of these
Answer : D

Question. Electric wires are covered with
(a) a conducting material
(b) insulators
(c) Both the above
(d) None of these
Answer : B

Question. A cell is represented by symbol

Answer : A

Question. The S.I. unit of charge is
(a) ampere
(b) coulomb/sec
(c) coulomb
(d) volt
Answer : C

Question. Which part of the electric bulb gives off light, when the bulb is switched on?
(a) Positive terminal
(b) Negative terminal
(c) Filament
(d) None of these
Answer : C

Question. In an electric circuit a switch is provided. The main function of switch is to
(a) make the bulb glow easily
(b) avoid the electric shocks
(c) allow the easy flow of charges in the circuit
(d) make or break the circuit
Answer : D

Question. If we add another bulb to an electric circuit that is provided with a glowing bulbs, then
(a) the new bulb will glow but the first one will not glow
(b) none of the two bulb will glow
(c) both the bulbs will glow but less brightly
(d) both the bulbs will glow but more brightly
Answer : C

Question. An electric cell is used as a source of electricity in :
(a) wrist watches
(b) alarm clocks
(c) transistor radios
(d) All of these
Answer : D

Question. Choose the best conductor of electricity
(a) Silver
(b) Copper
(c) Iron
(d) Lead
Answer : A

Question. Electric cell is used in
(a) mobile phones
(b) transistor
(c) cameras
(d) all of these
Answer : D

Question. Which part of the electric cell generally acts asp ositive terminal of the cell?
(a) Metal disc
(b) Metal cap
(c) Either metal disc or metal cap
(d) All the above are correct
Answer : B

Question. Select the one that is an excellent insulator?
(a) Paper
(b) Lead pencil
(c) Rubber
(d) Mercurry
Answer : C

Question. Electric wires are made of
(a) a conducting material
(b) aluminium
(c) copper
(d) All the above
Answer : D

Question. It is a source of electricity generally used in wrist watches and transistors. It is
(a) an electric cell
(b) an electric circuit
(c) Both the above
(d) None of these
Answer : A

Question. Name the cells in human body which look like electric wires.
(a) Arteries
(b) Veins
(c) Neurons
(d) All of these
Answer : C

Question. Select the object which can be placed between the open ends to light up the bulb in an electric circuit.
(a) Needle of sewing machine
(b) A copper coin
(c) An iron nail
(d) Any one of the above three
Answer : D

Question. It is a simple device used in electric circuits to make or break the electric circuit. It is
(a) a filament of bulb
(b) electric cell
(c) electric switch
(d) insulators
Answer : C

Question. Filament
(a) is a part of the electric bulb
(b) consists of a thin wire
(c) fixed in the middle of the bulb
(d) the thin wire that gives off light when bulb is switched on
Answer : D

Question. How many terminals does a bulb has ?
(a) 1
(b) 2
(c) 3
(d) 4
Answer : B

Question. How many terminals are there in a switch?
(a) 1
(b) 2
(c) 3
(d) 4
Answer : B

Question. Why does a fused bulb not glow when put in an electric circuit?
(a) The electric circuit remains incomplete
(b) There occurs a break in the path of current
(c) Both the above
(d) None of the above
Answer : C

Question. It is a part of the bulb that is made up of a thin metallic wire. It is
(a) positive terminal
(b) negative terminal
(c) filament
(d) None of these
Answer : C

Question. How many filaments are there in a bulb?
(a) 1
(b) 2
(c) 3
(d) 4
Answer : A

Question. How many terminals does a cell has?
(a) 1
(b) 2
(c) 3
(d) 4
Answer : B

DIRECTIONS : Read the following two statements carefully and choose the correct options.
(a) Statement (1) is correct while statement (2) is incorrect.
(b) Statement (2) is correct while statement (1) is incorrect.
(c) Both statements are correct
(d) Both statements are incorrect.

Question. Statement-1 : Filament is a part of electric bulb.
Statement-2 : Filament consist of a thick metallic wire.
Answer : A

Figure Based Questions

Question. The filament of a bulb will glow in the given electric circuit, if the plug key is

(a) open
(b) closed
(c) both (a) and (b)
(d) None of these
Answer : B

Question. The symbol of an open switch is shown in

(a) figure (i)
(b) figure (ii)
(c) both figure (i) and figure (ii)
(d) None of the above is correct
Answer : C

Question. The symbol for a closed switch is shown in

(a) figure (i)
(b) figure (ii)
(c) both figure (i) and figure (ii)
(d) None of these
Answer : B

Question. Which of the following represent a cell?

(a) (i)
(b) (ii)
(c) neither (i) nor (ii)
(d) we cannot represent a cell
Answer : A

Question. Look at the following diagram and tell whether the switch in it is

(a) open
(b) closed
(c) absent
(d) None of these
Answer : B

Question. Which part of the bulb is made up of an insulator material?

(a) A
(b) B
(c) C
(d) D
Answer : C

Match the Column

DIRECTION : Match Column-I with Column-II and select the correct answer using the code given below the columns.

Question.
Column - I                                           Column - II
A. Current                                             (p) coulomb
B. Negatively charged particle              (q) Insulator
C. PVC                                                  (r) Electron
D. Charge                                             (s) ampere
(a) A → (r); B → (s); C → (p); D → (q)
(b) A → (s); B → (r); C → (q); D → (p)
(c) A → (s); B → (p); C → (r); D → (q)
(d) A → (p); B → (r); C → (s); D → (q)
Answer : B

Question.

(a) A → (p); B → (r); C → (q); D → (s)
(b) A → (p); B → (q); C → (s); D → (r)
(c) A → (p); B → (q); C → (r); D → (s)
(d) A → (q); B → (p); C → (r); D → (s)
Answer : C

Passage Based Questions

DIRECTIONS : Read the passage given below and answer the questions that follow. 

Passage
An electric cell is a source of electricity.
Such cells are used in alarm clocks, wrist watches, transistor radios, cameras, etc.

Question. The electric cell has
(a) a number of terminals
(b) only one terminal
(b) two terminals
(d) None of the above is correct
Answer : C

Question. An electric cell is used
(a) as a source of electrical energy
(b) as a source of muscular energy
(c) Both the above
(d) None of the above
Answer : A

Question. A cell is generally provided with a metal cap that generally acts as
(a) its positive terminal
(b) its negative terminal
(c) sometimes positive and sometimes negative terminal
(d) None of the above
Answer : A

Assertion/ Reason Based Questions

DIRECTIONS : The questions in this segment consists of two statements, one labelled as “Assertion A” and the other labelled as “Reason R”. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Question. Assertion (A) : Connecting wire is used to connect all components of electric circuit.
Reason (R) : Connecting wire is made of electric conductor.
Answer : A

Question. Assertion (A) : Bulbs filament is made up of conductors.
Reason (R) : Tungsten is a good conductor of electricity.
Answer : B

Question. Assertion (A) : An electric cell has two terminals.
Reason (R) : One of the terminals is called the positive terminal and the other is called the negative terminal.
Answer : B

Question. Assertion (A) : An electric bulb has two terminals.
Reason (R) : The two terminals of an electric bulb are fixed in such a way that they do not touch each other.
Answer : B

Question. Assertion (A) : An electric bulb glows, only when an electric current passes through it.
Reason (R) : In an electric circuit the direction of current is taken from negative to positive terminal of the electric cell.
Answer : C

Question. Assertion (A) : In a closed electric circuit the current passes from one terminal of the electric cell to the other terminal.
Reason (R) : Generally the metal disc of a cell acts as positive terminal.
Answer : C

ANSWER THE FOLLOWING QUESTIONS:

1. The thin metal wire in an electric bulb that heats up and glows when electric current passes through it: ........................

2. The two ends of an electric battery or cell, which are connected to conducting wires to draw electric current: ........................

3. An electric circuit which has an unbroken path through which an electric current can flow: ........................

4. A device used to open or close an electric circuit: ........................

5. How does an electric switch work? ........................

6. With the help of a simple diagram explain the working of an electric torch.........................

7. Draw a circuit diagram for a circuit consisting of a cell, switch and an electric bulb.........................

8. How are reversible changes different from irreversible changes?........................

9. Classify the following into reversible or irreversible changes:

a. Dissolution of salt in water:- ........................

b. Melting of butter:- ........................

c. Curdling of milk ........................

d. Expansion of metal: ........................

e. Baking of cake:- ........................

f. Germination of seed:- ........................

10. Why is cooking food an irreversible change? ........................

11. Write any three precautions that are advised while handling electrical devices? ........................

12. You are advised to wear rubber footwear while handling electrical gadgets. Why? ........................

13. Name the terminals of an electric cell. ........................

14. What is a battery? ........................

Q.1 What is a power station? Name a few types of power stations.

Q.2 What is an electric cell? Draw a diagram of the cell.

Q.3 Name any four devices in which electric cells are used.

Q.4 Name the element which is used to make the filament of the bulb.

Q.5 Describe the construction of an electric bulb.

Q.6What is an electric circuit? What is the direction of current in a circuit?

Q.7What do you mean by a fused bulb? Why does a fused bulb not glow?

Q.8 Define a switch. Describe an activity of making a switch at home.

Q.9 Differentiate between conductors and insulators, giving suitable examples.

Q.10 Give reasons why switches and sockets are made up of conductors while coverings of electrical wires and plug tops are made up of insulators.

Q.11 Name the following:

(i) The source of electricity.(ii) The two terminals of a cell.

(iii) A combination of two or more cells

(iv) A metal which is used to make the filament of a bulb.

(v) An electrical gadget to break an electric circuit.

(vi)Name the person who invented the cell and the one who invented the electric bulb.

I. Fill in the blanks:

1. The electric energy which is supplied in our home comes from electric ____________________houses.

2. Diesel __________ is generally used in big factories or at public functions as a standby.

3. The battery ____________________ is uses at homes, offices and hospitals.

4. The tiny coiled wire which is supported by two thick wire inside the bulb is called -______

5. Electric cell is a device which converts energy of chemicals ___________________energy.

II. Name the following:

1. A combination of two or more cells

2. An electric device which converts electric energy into light energy

3. An electric circuit in which path of electricity is broken at some point is called

III. Choose the correct answer:

1. An electric bulb has (two/one) terminals.

2. The base of an electric cell is its (negative/positive) terminal.

3. All metals are (conductors/Insulators) of electricity.

IV. Distinguish between :
Conductors and Insulators

V. Name the five transformations of electric energy

Electricity and Circuits

I  Fill in the blanks :

1. An electric ______________ is a continuous path along which the current flows.

2. A circuit in which electricity does not flow is called an ______________ circuit.

3. The source of electricity in an electric cell are the ______________ stored in it.

4. Rubber is a good example of electric ______________.

5. A device that is used to break of complete an electric circuit is called ______________.

6. An electric cell has ______________ terminals.

7. If the filament of a bulb breaks, it is said to be ______________.

8. An electric current is ______________ when no current flows through it.

9. Electric current flows from ______________ terminal to ____________ terminal of cell in the circuit.

II Give one word for the following statements :

1. The source of electricity _____________

2. Thin wire in a bulb which gives out light __________

3. The arrangement of providing a complete path for electricity to pass between two terminals of the electric cell __________

4. Some times electric bulb does not glow even when electric switch is „ON‟ then we say that bulb is ____________

5. An electric appliance which makes or breaks an electric circuit ______________

III Mark True (T) or False (F) for following statements :

a. Electric current can flow through metals.

b. Instead of metal wires, a jute string can be used to make a circuit.

c. Electric current can pass through a sheet of thermocol.

d. When current flows through a circuit, the circuit is called open circuit.

e. Electric current can easily flow through Copper.

f. When an electric circuit is closed, the electric current stops flowing through it.

IV Tick the correct answer :

1. Choose a good conductor from the following materials.
a) Pencil lead
b) Thermocol
c) Wooden block

2. Which of the following is not a good conductor of electricity.
a) Mercury
b) Copper
c) Plastic
d) Aluminum foil

3. Switch is „OFF‟ when
a) circuit is complete
b) Circuit is not complete
c) Current is flowing in the circuit
d) Cell is fully charged