# Electrostatics-Electric Potential (NEET (NTA-National Eligibility cum Medical Entrance Test) Physics): Questions 4 - 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.

## Question number: 4 (2 of 3 Based on Passage) Show Passage

» Electrostatics » Electric Potential

MCQ▾

### Question

Potential at B is

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

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

» Electrostatics » Electric Potential

MCQ▾

### Question

Charge on conductor A is

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## 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.

b.

c.

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.

(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.

### 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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