Electrostatics (NEET Physics): Questions 54 - 58 of 107

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Question number: 54

» Electrostatics » Coulomb's Law

MCQ▾

Question

In the rectangle shown below, the two corners have charges q 1 = -5 μC and q 2 = +2.0 μC. Find the force acting on the q 2 due to q 1.

Rectangular image given having charge values

Rectangular Image Given Having Charge Values

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

Choices

Choice (4) Response

a.

-60N

b.

-30N

c.

-20N

d.

-40N

Question number: 55

» Electrostatics » Electric Flux

MCQ▾

Question

4 charge q is placed at the center of a cube. Then the flux passing through one face of cube will be

Choices

Choice (4) Response

a.

qϵ0

b.

q2ϵ0

c.

q6ϵ0

d.

q4ϵ0

Question number: 56

» Electrostatics » Electric Potential

MCQ▾

Question

Point charge q 1 = 2 μ C and q 2 =-1 μ C are kept at points x = 0 and x = 6 respectively. Total electrical potential will be zero at points,

Choices

Choice (4) Response

a.

x = 1 and x = 5

b.

x =-2 and x = 2

c.

x = 2 and x = 9

d.

x = 4 and x = 12

Question number: 57

» Electrostatics » Electric Field

MCQ▾

Question

Figure shows the electric lines of force emerging from a charged body. If the electric field at A and B are E A and E B respectively and if the distance between them is r then

Non-uniform electric field

Non-Uniform Electric Field

Non-uniform elecric force lines. At A point region lines are more dance than B point region.

Choices

Choice (4) Response

a.

E A > E B

b.

EA=EBr2

c.

EA=EBr

d.

E A < E B

Question number: 58

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

Two equal charges q are placed at a distance of 2a and a third charge -2q is placed at the midpoint. The potential energy of the system is

Choices

Choice (4) Response

a.

6q28πϵ0a

b.

- 7q28πϵ0a

c.

q28πϵ0a

d.

9q28πϵ0a

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