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

A. He can use a thicker piece of copper wire.

He can reverse the orientation of the battery

DC He can replace the iron bolt with a wooden rod.

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.

A. He can use a thicker piece of copper wire.

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.