Electrostatics (NEET Physics): Questions 50 - 53 of 107

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Question number: 50

» Electrostatics » Electric Potential

MCQ▾

Question

In the rectangle shown below, the two corners have charges q 1 = -5 μC and q 2 = +2.0 μC. The work done by external agent in moving a charge q = +3.0 μC slowly from B to A is

(Take l/4π 0 = 10 10 Nm 2 /C 2)

Rectangular figure with charges given

Rectangular Figure With Charges Given

In figure the rectangular having two charges at corners q1=-5 μC and q2 =+2.0 μC.

Choices

Choice (4) Response

a.

5.5 J

b.

2.8 J

c.

3.5 J

d.

4.5 J

Question number: 51

» Electrostatics » Electric Potential

MCQ▾

Question

The displacement of a charge Q in the electric field E=e1i^+e2j^+e3k^,r=ai^+bj^ . The work done is,

Choices

Choice (4) Response

a.

Q(ae1+be2)

b.

Q(e1+e2)a2+b2

c.

Q(ae1)2+(be2)2

d.

None of the above

Question number: 52

» Electrostatics » Electric Field Due to a Point Charge

MCQ▾

Question

Electric lines of force at negative point charge are

Choices

Choice (4) Response

a.

Radial, inward

b.

Circular, anticlockwise

c.

Radial, outward

d.

Circular, clockwise

Question number: 53

» Electrostatics » Capacitors

MCQ▾

Question

Two dielectric slabs of constant K 1 and K 2 have been filled in between the plates of a capacitor as shown below. What will be the capacitance of the capacitor?

Capacitor - Two dielectric slabs of constant K1 and K2

Capacitor - Two Dielectric Slabs of Constant K1 and K2

Two dielectric slabs of constant K1 and K2 have been filled in between the plates of a capacitor

Choices

Choice (4) Response

a.

2ϵ0Ad(K1×K2K1+K2)

b.

4ϵ0Ad(K1+K2K1K2)

c.

2ϵ0Ade(K1+K2)

d.

2ϵ0Ad(K1+K2K1K2)

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