Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12

# A Point Charge Q is Rotated Along a Circle in an Electric Field Generated by Another Point Charge Q. the Work Done by the Electric Field on the Rotating Charge in One Complete Revolution is - Physics

MCQ

A point charge q is rotated along a circle in an electric field generated by another point charge Q. The work done by the electric field on the rotating charge in one complete revolution is

#### Options

• zero

•  positive

•  negative

• zero if the charge Q is at the centre, otherwise non-zero

#### Solution

zero

The electrostatic field is conservative and the work done by the field is a state function, i.e. it only depends on the initial and final positions of the charge but not on the path followed by it. In completing one revolution, the charge has the same initial and final positions. Therefore, the work done by the field on rotating the charge in one complete revolution is zero.

Concept: Electric Field - Electric Field Due to a System of Charges
Is there an error in this question or solution?

#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 7 Electric Field and Potential
MCQ | Q 9 | Page 120