Answer: force.
- A force
- B no effect
- C net charge
- D large temperature rise
Correct answer: A. force
Explanation: The interaction of the current with the field produces a force on the conductor.
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.