Multiple Select QuestionA 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.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.
A. He can use a thicker piece of copper wire.
C. He can replace the iron bolt with a wooden rod.
D. He can add a switch between the battery and the iron bolt.