Electrostatics-Electrostatic Potential Energy (NEET Physics): Questions 10 - 13 of 17

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Question number: 10

» 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

Question number: 11

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

An electric dipole has the magnitude of its charge is q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is perpendicular to the direction of the field, the force on it and its potential energy are respectively

Choices

Choice (4) Response

a.

2q. E and minimum

b.

are zero

c.

q. E and pE

d.

q. E and pE

Question number: 12

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

If identical charges (-q) are placed at each corner of a cube of side b , then electric potential energy of charge (+q) which is placed at center of the cube will be

Choices

Choice (4) Response

a.

42q2πϵ0ba

b.

82q2πϵ0b

c.

4q23πϵ0b

d.

82q24πϵ0b

Question number: 13

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

Four charges + q, -q, + q and -q are put together on four corners of a square as shown in figure. The net electrostatic energy of the system is,

Square with Four charges + q, -q, + q and -q

Square With Four Charges + Q, -Q, + Q and -Q

Four charges + q, -q, + q and -q are put together on four corners of a square

Choices

Choice (4) Response

a.

Zero

b.

2kq2a

c.

2kq2a

d.

All of the above

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