A negative test charge is moving mear a long straight wire carrying a current. The force acting on the test charge is parallel to the direction of the current. The motion of the charge is:

Options

A. away from the wire
B. towards the wire
C. parallel to the wire along the current
D. parallel to the wire opposite to the current

Answer

b

Explanation

Refer following figure.

Note that charge is postitive hence direction of magnetic force is opposite to `vec v xx vec B` . Option (b) is correct.