Electrostatics-Electric Potential (NEET Physics): Questions 12 - 15 of 25

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Question number: 12

» Electrostatics » Electric Potential

Assertion-Reason▾

Assertion (Ꭺ)

Electric potential of earth is taken to be zero as a reference.

Reason (Ꭱ)

The electric field produced by earth in surrounding space is zero.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are false
b. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
c. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
d. Ꭺ is false but Ꭱ is true

Question number: 13

» 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: 14

» 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: 15

» 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

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