Question

question 26 of 30 what happens if you move a bar magnet back and forth along the axis of the coiled wire shown below? a. a magnetic force pushes the bar magnet out from the coiled wire. b. a current is induced in the coiled wire, which lights the lightbulb. c. the electric force stored in the magnet causes the lightbulb to turn off. d. the current flowing in the bar magnet cancels out the current in the wire loop.

Explanation:

When a bar magnet moves back and forth along the axis of a coiled wire, the changing magnetic flux through the coil induces an electromotive force (emf) according to Faraday's Law of electromagnetic induction. This induced emf causes a current to flow in the closed circuit (coiled wire and lightbulb), lighting the bulb.

Answer:

B. A current is induced in the coiled wire, which lights the lightbulb.