CBSE Class 6 Science Electricity and Circuit MCQs

Choose the correct answer from the bracket.

1. In electric bells electric energy transform in to ____________energy.
(a) Mechanical energy
(b) Magnetic energy
(c) Sound energy
(d) Light energy

Answer : B

2.----------- is the positive terminal of an electric cell.
(a) Metal disc
(b) Metal case
(c) Metal cap
(d) Metal base

Answer : C

3.The tiny coiled metal wire present inside the bulb is called____________.
(a) Element
(b) Conductor
(c) Filament
(d) None of these

Answer : C

4. A combination of two or more electric cells is called___________.
(a) Electric circuit
(b) Battery
(c) Terminals
(d) None of these

Answer : B

5. An electric bulb has ____________terminals.
(a) 3
(b) 4
(c) 1
(d) 2

Answer : D

6 ----------- is an electric device which easily closes or opens an electric circuit.
(a) Filament
(b) Electric bulb
(c) Electric switch
(d) Electric cell

Answer : C

7. A material which does not allow the electricity to pass through it is___________.
(a) Conductor
(b) Electric cell
(c) Insulator
(d) None of these.

Answer : C

8. Non metals like __________and __________are conductors of electricity.
(a)Wood and paper
(b) Graphite and gas carbon
(c) Glass and rubber
(d) None of theses

Answer : B

9. A material which allows the electricity to pass through it is ________.
(a) conductor
(b) Insulator
(c) Transistor
(d) None of these

Answer : A

10. Electric energy is produced from the____________ within the cell.
(a) Chemicals
(b) Metals
(c) Terminals
(d) None of these

Answer : A

11. A complete electric circuit is called______________ electric circuit.
(a) open
(b) Closed
(c) Complete
(d) None of these

Answer : B

12. ----------- is an insulator.
(a) Metal
(b) acid
(c) Rubber
(d) Salt solution

Answer : C

13.__________is a conductor.
(a) Wood
(b) Metal
(c) Paper
(d) Petrol

Answer : B

14. The electric current in a closed circuit always flows from the ___________terminal of the electric cell to the ______terminal.
(a) Negative to positive
(b) Positive to negative
(c) Positive to positive
(d) None of these

Answer : B

15. The base of an electric cell is its ___________terminal.
(a) Positive terminal
(b) Negative terminal
(c) Negative and positive
(d) None of these

Answer : B

16. The path along which electric current flows is_____________.
(a) Switch
(b) Electric current
(c) Electric circuit
(d) Electric cell

Answer : C

17. In _____________ electrical energy is transformed in to mechanical energy.
(a) Transistor
(b) Mixer grinder
(c) Electromagnet
(d) Electric bell.

Answer : B

18 ------------- is an energy which flows in an electric circuit.
(a)Electric circuit
(b) Electromagnet
(c) Electric current
(d) None of these.

Answer : C

19. The central _____________of an electric cell is always positive.
(a) Circuit
(b) Chemical
(c) Terminal
(d) None of these

Answer : C

20. Kerosene oil is an example of_______________.
(a) Conductors
(b) Insulators
(c) Electrolyte
(d) None of these

Answer : B

21. The cylindrical container of electric cell is made of ___________ _and acts as negative terminal.
(a) Copper
(b) Iron
(c) Zinc
(d) Silver

Answer : C

22. The wire which carries away the current to the power house is called____________.
(a) Earth wire
(b) Neutral wire
(c) Live wire
(d) None of these

Answer : B

23._____________ is a safety wire which protect us from electric shocks and electric fire.
(a) Earth wire
(b) Neutral wire
(c) Live wire
(d) None of these

Answer : A

24.____________ is a device which converts chemical energy in to electrical energy.
(a) Electrical bell
(b) Electric lift
(c) Electric cell
(d) Electric bulb

Answer : C

25. An electric cell has ____________terminals. 
(a) 3
(b)4
(c)1
(d)2 

Answer : D

26. A bulb does not glow when a/an ____ is used in the place of a switch. 
(a)  Iron nail 
(b)  Matchstick 
(c)  Aluminum 
(d) copper 

Answer : B

27. Which of the following pairs consist of a conductor and an insulator of electricity? 
(a) Wood and wool 
(b)  Copper and steel 
(c)  Silver and gold 
(d)  Silver and rubber 

Answer : D

28. Plastic, wood and Bakelite are some good ____ of electricity. 
(a)  Absorbers 
(b)   Conductors 
(c)   Insulators 
(d)  reflectors 

Answer : C

29. Electrical wires and parts of electrical appliances are covered with ____
(a) Silver  
(b) Copper  
(c)  Gold  
(d) plastic

Answer : D

30. Materials, which do not allow electricity to pass through them easily, are called ____ of electricity. 
(a) Deflectors 
(b) Insulators 
(c)  Conductors 
(d) Absorbers 

Answer : B

31. ____ allow electric current to pass through them. 
(a)  Absorbers 
(b)  Insulators 
(c)  Conductors 
(d)  Deflectors 

Answer : C

32. Which of the following is an insulator? 
(a) Silver 
(b) Iron 
(c)  Copper 
(d) Rubber 

Answer : D

33. Metals are ____ of electricity. 
(a)  Absorber 
(b) Conductors 
(c)  Insulators 
(d) Deflectors 

Answer : B

34. When the switch of an electric torch is in ON position electric current flows from the electric cell to the filament of an electric bulb due to which it gets ____ and the bulb ____. 
(a) cooled, does not glow 
(b) heated, does not glow 
(c)  heated, glows 
(d)  cooled, glows 

Answer : C

35. The second thick wire of the filament of an electric bulb is connected to a metal tip along the ____ side of the metal cover at the base of the bul(b) 
(a) Conducting 
(b)  Insulating 
(c)  Short 
(d)  long 

Answer : C

36. A bulb in a closed circuit at times may not glow. Which of the following is not a  cause for not glowing of the bulb? 
(a)  Connecting wires are made of wool. 
(b)  Energy of the cell in the circuit is completely exhauste(d) 
(c)   There may be a loose contact between the parts. 
(d)  The bulb is not fuse(d) 

Answer : D

37. An electric cell produces electricity from the _____ stored inside it. 
(a) Current  
(b) Energy 
(c)  Chemicals  
(d) Light  

Answer : C

38. An energy form NOT commonly used in households is__________.
(a) chemical
(b) nuclear
(c) heat
(d) Electrical

Answer : B

39. In the simple electric circuit shown, the light will glow when ? in the picture corresponds to

(a) copper
(b) rubber
(c) cork
(d) plastic

Answer : A

40. The voltage generated by a regular pencil cell is about__________.
(a) 1.5 Volts
(b) 50 Volts
(c) 100 Volts
(d) 220 Volts

Answer : A

41. Kamini's store room has only one electric bulb and she finds it a little dark. She wants to fit an extra bulb. Her husband John suggests that he will instead fit more mirrors on the walls of the store room. Will John's idea work?
(a) Yes, though it will only feel brighter, the room will not actually become brighter.
(b) Yes, the mirrors will reflect light actually making the room brighter.
(c) No, without adding a light source, the room cannot be brightened.
(d) No, due to the reflections of the other objects, the room will become less bright.

Answer : B

42. Look at the figure given below. In order for the bulb to glow, a piece of wire has to connect?

(a) P and Q
(b) Q and S
(c) P and S
(d) S and R

Answer : C

43. During a power cut, lights, fans, televisions and other electrical devices stop functioning, but most telephones continue to work. Why is that?
(a) Telephones do not use electricity.
(b) All telephones have cells (batteries) inside which provide them power.
(c) Telephones receive electric supply through the wires connecting them to the exchange.
(d) Telephones store the electricity when there is no power cut and use them during power cuts.

Answer : C

Answer Key

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. Positive terminal of an electric cell                         (p) Metal cap
B. Negative terminal of an electric cell                       (q) Metal disc
C. Used to make filament of an electric bulb              (r) Metal wire
D. Used to make outer case of electric bulb               (s) Glass
(a) A→(p); B→(q); C→(r); D→(s)
(b) A→(q); B→(p); C→(r); D→(s)
(c) A→(q); B→(p); C→(s); D→(r)
(d) A→(p); B→(q); C→(s); D→(r)
Answer : A

Question.
Column-I                                         Column-II
A. Two terminals                                         (p) Both electric cell and a bulb
B. Filament                                                 (q) Bulb
C. Source of electricity                               (r) Electric cell
D. Device used to make or break an         (s) Electric switch electric circuit
(a) A→(p); B→(q); C→(r); D→(s)
(b) A→(q); B→(p); C→(r); D→(s)
(c) A→(q); B→(p); C→(s); D→(r)
(d) A→(p); B→(q); C→(s); D→(r)
Answer : A

DIRECTIONS (Qs.22-31 ) : Read the passage (s) given below and answer the questions that follow.

Passage -1
Those materials which do not allows electric current to pass through them are called insulators e.g., air, cork, rubber, thermocole, paper, etc.
Insulators are used for covering electrical wires, plug tops, switches and other parts of electrical appliances.

Question. Air is an insulator of electricity because air have no –
(a) electrons
(b) free electrons
(c) protons
(d) None of these
Answer : B

Question. House wiring electric wires are generally  covered with rubber. It is because, rubber is
(a) a good conductor
(b) a partial conductor
(c) easily available
(d) an insulator
Answer : D

Question. We can turn OFF the switch without getting anelectric shock because
(a) it is covered with an insulating material
(b) it is covered with conducting material
(c) our hand is bad conductor of electricity
(d) None of these
Answer : A

Question. Covers of electric plugs are made up of
(a) conductors
(b) metals
(c) insulators
(d) all of these
Answer : C

Passage -2
An electric bulb has a filament that is connected to the terminals.
The two terminals of filament are fixed with two thick wires provides support to it.
These terminals are fixed in such a manner that they do not touch each other.

Question. Where is the filament fixed in the electric bulb?
(a) Near the positive terminal
(b) Near the negative terminal
(b) In the middle
(d) None of the above is correct
Answer : C

Question. Filament is
(a) a thin wire that gives off light when bulb is switched on
(b) fixed to two thick wires which provides support to it
(c) Both the above are correct
(d) None of these is correct
Answer : C

Question. Which of the following statement(s) is/are correct ?
(a) The two terminals of a bulb are fixed in such a way that they do not touch each other.
(b) The two terminals of a bulb are fixed in such a way that they touch each other.
(c) The two terminals of a bulb are connected to the same terminal of the electric cell.
(d) None of the above is correct
Answer : A

Passage -3
An arrangement in which two terminals of an electric cell are connected to two terminals of the bulb is known as electric circuit.
Current flows from positive to negative terminal in closed circuit.
Filament of bulb is made up of tungsten.

Question. What is the direction of flow in an electric circuit?
(a) From positive terminal to negative terminal of electric cell.
(b) From negative terminal to positive terminal of electric cell
(c) Both the above are correct
(d) None of the above is correct
Answer : A

Question. Which of the following statement(s) is/are correct ?
(a) The bulb in the circuit may not glow if the bulb is fused
(b) The bulb in the circuit may not glow if its filament is broken
(c) Both the above
(d) None of the above
Answer : C

Question. The filament of bulb is made of
(a) a metal
(b) tungsten
(c) Both the above are correct
(d) None of these is correct
Answer : B

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) : Silver is not used to make electric wires.
Reason (R) : Silver is a bad conductor.
Answer : C

Question. Assertion (A) : Copper is used to make electric wires.
Reason (R) : Copper is a poor conductor of electricity.
Answer : C

Question. Assertion (A) : A domestic electric appliance working on a three pin, will continue working even if the top pin is removed.
Reason (R) : The third pin is used only for safety purpose.
Answer : A

Question. Assertion (A) : Insulators do not allow the current to flow through themselves.
Reason (R) : They have no free charge carriers.
Answer : A

Question. Assertion (A) : Air is an insulator.
Reason (R) : Those materials that do not allow electric current to pass through them are called insulators.
Answer : A

Statement Based Questions

DIRECTIONS : Read the following three statements carefully and choose the correct option.
(a) Statement (1) and (3) are incorrect while statement (2) is correct.
(b) Statement (1) and (2) are incorrect while (3) is correct.
(c) All the statements are correct.
(d) All the statements are incorrect.
 

Question. Statement-1 : If a human touches high tension wire he will get electric shock.
Statement-2 : Transmission wires carry a very low voltage current.
Statement-3 : A bird sitting on a bare high power transmission wire feels a very feeble current.
Answer : B

Question. Statement-1 : There is a very less current flowing, when an electric circuit is open.
Statement-2 : When the switch of an electric circuit is in off mode, the circuit is said to be open.
Statement-3 : One can get a shock in open circuit.
Answer : A

Figure Based Questions

Question. The diagram below shows an incomplete circuit.

Which item would allow the bulb to light up if it were used to connect point A to point B?
(a) a glass rod
(b) a metal coin
(c) a plastic comb
(d) a paper cup
Answer : B

Question. A student attached two balloons to equal lengths of string and tied them to the same point. The student observed that the balloons repelled each other, as shown in the diagram below.

In terms of electrical charges, explain why the balloons repelled each other?
(a) because both the balloons are positively charged
(b) because both the balloon are negatively charged
(c) because one is positively and another is negatively charged
(d) either (a) or (b)
Answer : D

Question. The diagram below shows a bulb and a wire attached to a battery.

Why would this bulb be lit?
(a) The battery is out of energy
(b) The bulb is out of energy
(c) The circuit is opened
(d) The circuit is closed
Answer : D

Question. The diagram below shows an electric circuit.

Chemical energy from the battery is changed into electrical energy. This electrical energy is then changed to which type of energy?
(a) electrical energy into chemical energy
(b) electrical energy into heat energy
(c) electric energy into light energy
(d) electric energy into sound energy
Answer : C

Question. In an electric circuit shown below the direction of current is taken from

(a) as shown in (i)
(b) as shown in (ii)
(c) can’t say
(d) None of the above is correct
Answer : B

Question. Look at the following two diagrams and answer in which case bulb will glow?

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

Question. In the following circuit the flow of current is in which route?

(a) CBED
(b) DEBC
(c) Either of the above two
(d) None of these
Answer : A