A circular loop has radius R and carries current `I_2` in a clockwise direction (as shown in Fig.)
Channel: Doubtnut
Date: 2020-07-26

A circular loop has radius R and carries current `I_2` in a clockwise direction (as shown in Fig.) The centre of the loop is at a distance D above a long, straight wire. What are the magnitude and direction of the current `I_1` in the wire if the magnetic field at the center of the loop is zero?