Electrostatics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 32 - 37 of 109

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Question number: 32

» Electrostatics » Electric Potential

MCQ▾

Question

A particle A has charge +q and a particle B has charge +4q with each of them having the same mass m. When allowed to fall from rest through the same electric potential difference, the ratio of their speed will become

Choices

Choice (4) Response

a.

1: 2

b.

4: 1

c.

2: 1

d.

1: 4

Question number: 33

» Electrostatics » Electric Potential

MCQ▾

Question

A charge (-q) and another charge (+Q) are kept at two points A and B respectively. Keeping the charge (+Q) fixed at B, the charge (-q) at A is moved to another point C such that ABC forms an equilateral triangle of side l. The net work done by electrostatic field in moving the charge (-q)

Choices

Choice (4) Response

a.

b.

Zero

c.

d.

Question number: 34

» Electrostatics » Gauss's Law

MCQ▾

Question

A sphere of radius R has a uniform distribution of electric charge in its volume. At a distance x from its center, for x < R, the electric field is directly proportional to

Choices

Choice (4) Response

a.

x

b.

x 2

c.

d.

Question number: 35

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

When the separation between two charges is increased, the electric potential energy of the charges is,

Choices

Choice (4) Response

a.

decreases

b.

may increase or decrease

c.

Remains the same

d.

Increases

Passage

Capacitor C 3 in the circuit is variable capacitor (its capacitance can be varied). Graph is plotted between potential differences V, (across capacitor C 1) versus C 3, Electric potential V 1 approaches on asymptote of 10 volts as C 3 → ∞

 Circuit Diagram - capacitors C2 and C3

Circuit Diagram - Capacitors C2 and C3

In figure, capacitors C2 and C3 connected in parallel and C1 connected in series. Capacitor C3 is variable capacitor.

Graph of V1→C3 for potential difference

Graph of V1→C3 for Potential Difference

Figure shows the curve between p. d (across capacitor C1) versus variable capacitor C3.

Question number: 36 (1 of 3 Based on Passage) Show Passage

» Electrostatics » Capacitors

MCQ▾

Question

The ratio of the capacitance C1/C2 will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 37 (2 of 3 Based on Passage) Show Passage

» Electrostatics » Capacitors

MCQ▾

Question

The ratio of energy stored in capacitor C 1 to that of total energy when C 3 → ∞ is

Choices

Choice (4) Response

a.

1

b.

Zero

c.

Data insufficient

d.

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