Question

A negative test charge is moving near a long straight current carrying wire . A force will act on the test charge in a direction parallel to the direction of the current, if the motion of the charge is in a direction

• A. towards wire
• B. the same as that of current
• C. opposite to that of current
• D. perpendicular to both the direction of current and the direction towards wire.

Answer 1

The correct option is A towards wire

The magnetic force $\overrightarrow{F}$ shall act on the negatively charged test particle in direction parallel to current carrying wire, if the velocity $\overrightarrow{V}$ of the negative charge is as shown.