Electrostatics (NEET Physics): Questions 97 - 101 of 109

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Question number: 97

» Electrostatics » Electric Potential

MCQ▾

Question

A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then electric field at Q is proportional to

Choices

Choice (4) Response

a.

p -1 and r -2

b.

p and r -2

c.

p and r -3

d.

P 2 and r -3

Question number: 98

» Electrostatics » Electric Potential

MCQ▾

Question

Two electric charges 12 μC and -6 μ C are placed 20 cm apart in air. If there will be a point P on the line joining these charges and outside the region between them, at which the electric potential is zero, and then the distance of P from - 6μC charge is

Choices

Choice (4) Response

a.

0.20 m

b.

0.15 m

c.

0.25 m

d.

0.10 m

Question number: 99

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

A positive charge is moved from a low potential point A to high potential point B. Then the electric potential energy of the system

Choices

Choice (4) Response

a.

Nothing definite can be predicted

b.

Increases

c.

Decreases

d.

Will remain the same

Question number: 100

» Electrostatics » Electric Field Lines

Assertion-Reason▾

Assertion (Ꭺ)

Electric lines of force cross each other.

Reason (Ꭱ)

Electric field at a point superimpose to give one resultant electric field.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is false but Ꭱ is true

Question number: 101

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

If V and u are electric potential and energy density, respectively, at a distance r from a positive point charge, then which of the following graph is correct?

Choices

Choice (4) Response

a.

Option A graph of V2→u

Option a Graph of V2→U

figure shows that the graph of V2→u is not linear

b.

 Option B graph of V2→u

Option B Graph of V2→U

figure shows that the graph of V2→u is not linear

c.

Option C graph of V2→u

Option C Graph of V2→U

Figure shows that the graph of V2→u is lenear and it pass though origin.

d.

Option D graph of V2→u

Option D Graph of V2→U

Figure shows that the graph of V2→u is linear sloping downwards

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