Question

The two ends of a coiled wire are connected to the electrodes of a lightbulb.

How does the bar magnet induce a current in the wire?
NS
A. Moving the bar magnet back and forth along the axis of the coil
induces a current in the wire.
B. Placing the bar magnet parallel to the axis and inside the coil
induces a current in the wire.
C. Placing the bar magnet at 90° to the axis of the coil induces a
current in the wire.
O
D. Moving the bar magnet in a circle around the lightbulb induces a
current in the wire.

Answer 1

A?

Step-by-step explanation:

Answer 2

a

Step-by-step explanation:

The bar magnet moves downward with respect to the wire loop, so that the number of magnetic field lines going through the loop decreases with time. This causes an emf to be induced in the loop, creating an electric current.

in other words, the magnets motion creates a current in the loop