Q.54

Expert-verifiedFound in: Page 230

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

An electric dipole consists of two equal but opposite electric charges, +q and -q, separated by a small distance d. If another charge Q is distance x from the center of the dipole, in the plane perpendicular to the line between +q and -q, and if x W d, the dipole exerts an electric force on charge Q, where K is a constant. How much work does the electric force do if charge Q moves from distance ?

Work done by electric force is

The work done by variable force is,

Here, is the force, is small displacement.

Consider dipole exerts an electric force is

use formula to find work done by force F using distance to distance.

Use power rule of integral,

Hence work done by electric force is

94% of StudySmarter users get better grades.

Sign up for free