Electrostatics-Electric Potential (NEET Physics): Questions 5 - 8 of 25

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Passage

Three concentric spherical conductors A, B and C of radii R, 2R and 4R respectively. A and C is shorted and B is uniformly charged.

Three concentric spherical conductors

Three Concentric Spherical Conductors

Three concentric spherical conductors A, B and C of radii R, 2R and 4R respectively.

Question number: 5 (3 of 3 Based on Passage) Show Passage

» Electrostatics » Electric Potential

MCQ▾

Question

Potential at A is due to B

Choices

Choice (4) Response
a.

Q4πϵ0R

b.

Q16πϵ0R

c.

Q20πϵ0R

d. Question does not provide sufficient data or is vague

Question number: 6

» Electrostatics » Electric Potential

MCQ▾

Question

Four equal charges Q are placed at the four corners of a square of each side ‘a’ Work done in removing a charge - Q from its center to infinity is

Choices

Choice (4) Response
a.

2Q2πϵ0a

b.

Q22πϵ0a

c.

2Q24πϵ0

d.

0

Question number: 7

» Electrostatics » Electric Potential

MCQ▾

Question

S is a solid neutral conducting sphere. A point charge q of 1 x 10 -6 C is placed at point A. C is the center of sphere and AB is a tangent. BC = 3m and AB = 4m.

Solid neutral conducting sphere.

Solid Neutral Conducting Sphere.

S is a solid neutral conducting sphere. A point charge q of 1 x 10 - 6 C is placed at point A.

(1) The electric potential of the conductor is 1.8 kV

(2) The electric potential of the conductor is 2.25 kV

(3) The electric potential at B due to induced charges on the sphere is - 0.45 kV

(4) The electric potential at B due to induced charges on the sphere is 0.45 kV

Choices

Choice (4) Response
a.

1 and 4

b.

1 and 2

c.

1 and 3

d.

1, 2 and 3

Question number: 8

» Electrostatics » Electric Potential

Assertion-Reason▾

Assertion (Ꭺ)

The electric potential and the electric field intensity at the center of a square having four fixed point charges at their vertices as shown in figure are zero.

Square having four charges at its vertices

Square Having Four Charges at Its Vertices

Square having four charges at its vertices

Reason (Ꭱ)

If electric potential at a point is zero then the magnitude of electric field at that point must be zero.

Choices

Choice (4) Response
a. Ꭺ is false but Ꭱ is true
b. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
c. Ꭺ is true but Ꭱ is false
d. Both Ꭺ and Ꭱ are false

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