Lan tries to make a 10 W lightbulb light up by connecting it to a battery with
an insulated copper wire. When the lightbulb does not light up, she assumes
that the battery is dead. What can she do to make an electric current flow
through the lightbulb?
A. Replace the battery with a coil of the wire, and then pass a magnet
back and forth through the coil.
B. Replace the battery with a magnet, and then pass a piece of wire
back and forth over the magnet.
O C. Wrap a magnet with several coils of the wire, and then hold the
lightbulb close to the wire.
D. Wrap the lightbulb with several coils of the wire, and then hold a
magnet close to the wire.
When a magnet passes through something that's copper, there is a reaction that generates an electric pulse. Passing a magnet back and forth through the wire is much more likely to generate the electrical charge needed then the other options given.
