A student built a simple electromagnet with copper wire, an iron bolt, and a 1.5-volt battery. The electromagnet was able to lift a paper clip from 3 centimeters away. Select three ways the student can increase the strength of his electromagnet.

Question

A.

He can use a thicker piece of copper wire.

B.

He can reverse the orientation of the battery.

C.

He can replace the iron bolt with a wooden rod.

D
.

He can add a switch between the battery and the iron bolt.

E
.

He can replace the 1.5-volt battery with a battery of higher voltage.

F.

He can use a longer piece of wire that wraps more times around the bolt.

Answer 1

To increase the strength of the electromagnet, the student can consider the following options:

A. He can use a thicker piece of copper wire.
Increasing the thickness of the wire can reduce the resistance and allow more current to flow, which can enhance the magnetic field.

E. He can replace the 1.5-volt battery with a battery of higher voltage.
Using a higher voltage battery can increase the current flowing through the coil of wire, which will strengthen the magnetic field.

F. He can use a longer piece of wire that wraps more times around the bolt.
Increasing the number of loops of wire around the iron bolt enhances the magnetic field produced, which strengthens the electromagnet.

The correct options are A, E, and F.