Question

A negative test charge is moving near 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 :

• 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 1

Answer: (B)

$\vec{F}=q\left(\vec{v}\times \vec{B}\right)$