Answer: torque.
- A torque
- B net charge
- C large heat
- D high potential
Correct answer: A. torque
Explanation: The field exerts a torque on the coil, deflecting it in proportion to the current.
The magnetic field around a long straight current-carrying wire forms concentric circles, with direction given by the right-hand rule (point thumb along I, fingers curl in the direction of B).
Concept context
Magnetic force on moving charges and currents, the Biot-Savart law, Ampere's law, and the cyclotron - how electric currents create and respond to magnetic fields.