JEE Physics Electrostatic Potential and Capacitance MCQs Set A

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MCQ for Full Syllabus Physics Electrostatic Potential and Capacitance

Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Electrostatic Potential and Capacitance in Full Syllabus.

Electrostatic Potential and Capacitance MCQ Questions Full Syllabus Physics with Answers

 

 

Question: The potential at a point 0.1 m from an isolated point charge is + 100 volt. The nature of the point charge is

  • a) Positive
  • b) Negative
  • c) Zero
  • d) Either positive or zero

Answer: Positive

 

Question:

  • a) 0
  • b)

  • c)

  • d)

Answer: 0

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Two identical positive charges are placed on the y-axis at y = – a and y = + a. The variation of V (electric potential) along x-axis is shown by graph

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Which graph best represents the variation of electric potential as a function of distance from the centre of a uniformly charged solid sphere of charge of radius R?

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: A hollow charged metal sphere has radius r. If the potential difference between its surface and a point at a distance 3r from the centre is V, then the electric field intensity at distance 3r from the centre is

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a) –Q
  • b)

  • c)

  • d)

Answer: –Q

 

Question: The potential gradient is a

  • a) Vector quantity
  • b) Scalar quantity
  • c) Conversion factor
  • d) Constant

Answer: Vector quantity

 

Question:

  • a) 8 along –ve x-axis
  • b) 8 along +ve x-axis
  • c) 16 along –ve x-axis
  • d) 16 along +ve x-axis

Answer: 8 along –ve x-axis

 

Question:

  • a) 30 V
  • b) 60 V
  • c) 40 V
  • d) 80 V

Answer: 30 V

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Determine the electric field strength vector if the potential of this field depends on x, y coordinates as V = 10 axy

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: If on the x-axis electric potential decreases uniformly from 60 V to 20 V between x = –2 m to x = +2 m, then the magnitude of electric field at the origin

  • a) May be greater than 10 V/m
  • b) Is 5 V/m
  • c) Must be 10 V/m
  • d) Is zero

Answer: May be greater than 10 V/m

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Two small spheres each carrying a charge q are placed, distance r apart. If one of the spheres is taken around the other in a circular path, the work done will be equal to

  • a) 0
  • b)

  • c)

  • d)

Answer: 0

 

Question: Work done in moving a charge q coulomb on the surface of a given charged conductor of potential V is

  • a) 0
  • b)

  • c)

  • d) Vq joule

Answer: 0

 

Question:

  • a) 2
  • b) 4
  • c) 1
  • d)

Answer: 2

 

Question:When a test charge is brought in from infinity along the perpendicular bisector of an electric dipole, the work done is

  • a) Zero
  • b) Negative
  • c) Positive
  • d) None of these

Answer: Zero

 

Question:The work done in moving an electric charge q in an electric field does not depend upon

  • a) Mass of the particle
  • b) Magnitude of charge
  • c) Potential difference between two points
  • d) All of these

Answer: Mass of the particle

 

Question: A dielectric slab of dielectric constant K is placed between the plates of a parallel plate capacitor carrying charge q. The induced charge q' on the surface of slab is given by

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

More Questions....................................................

 

Question:

  • a) 1 : 2
  • b) 2 : 1
  • c) 1 : 4
  • d) 4 : 1

Answer: 1 : 2

 

Question: If 50 joule of work must be done to move an electric charge of 2 C from a point, where potential is –10 volt to another point, where potential is V volt, the value of V is

  • a) + 15 V
  • b) + 10 V
  • c) – 15 V
  • d) 5 V

Answer: + 15 V

 

Question:

  • a) 1.6 × 10–13 J
  • b) 1.6 × 10–15 J
  • c) 1.6 × 10–21 J
  • d) 3.2 × 10–13 J

Answer: 1.6 × 10–13 J

 

Question:

  • a) 1.2 joule
  • b) 0.2 joule
  • c) Zero
  • d) None of these

Answer: 1.2 joule

 

Question: The electric potential at a distance of 3 m on the axis of a short dipole of dipole moment 4 × 10–12 coulomb-meter is

  • a) 4 mV
  • b) 12 mV
  • c) 27 mV
  • d) 1.33 × 10–3 V

Answer: 4 mV

 

Question: The electric potential in volts due to an electric dipole of dipole moment 2 × 10–8 coulomb-metre at a distance of 3m on a line making an angle of 60° with the axis of the dipole is

  • a) 10
  • b) 20
  • c) 40
  • d) Zero

Answer: 10

 

Question: Two electrons are moving towards each other, each with a velocity of 106 m/s. What will be closest distance of approach between them?

  • a) 2.53 × 10–10 m
  • b) 2.53 × 10–6 m
  • c) Zero
  • d) 1.53 × 10–8 m

Answer: 2.53 × 10–10 m

 

Question:

  • a) – 30 J
  • b) – 40 J
  • c) – 20 J
  • d) – 10 J

Answer: – 30 J

 

Question: Three charges –q, Q and –q are placed respectively at equal distances on a straight line. If the potential energy of the system of three charges is zero, then what is the ratio of Q : q ?

  • a) 1 : 4
  • b) 1 : 3
  • c) 1 : 2
  • d) 1 : 1

Answer: 1 : 4

 

Question:

  • a)

  • b)

  • c)

  • d)

    Zero

Answer:

 

Question: 1000 small water drops each of capacitance C join together to form one large spherical drop. The capacitance of bigger sphere is

  • a) 10 C
  • b) 100 C
  • c) 1000 C
  • d) C

Answer: 10 C

 

Question: Two parallel plate capacitors have their plate areas 100 cm2 and 500 cm2 respectively. If they have the same charge and potential and the distance between the plates of the first capacitor is 0.5 mm, then the distance between the plates of the second capacitor is

  • a) 0.25 cm
  • b) 0.20 cm
  • c) 0.15 cm
  • d) 0.10 cm

Answer: 0.25 cm

 

Question: A dielectric slab of dielectric constant K is placed between the plates of a parallel plate capacitor carrying charge q. The induced charge q' on the surface of slab is given by

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: A battery does 200 J of work in charging a capacitor. The energy stored in the capacitor is

  • a) 100 J
  • b) 200 J
  • c) 50 J
  • d) 400 J

Answer: 100 J

 

Question:

  • a) 2d/3
  • b) 3d/2
  • c) 3d/4
  • d) 4d/3

Answer: 2d/3

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

MCQs for Electrostatic Potential and Capacitance Physics Full Syllabus

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