A student connects a battery to wire and wraps the wire around an iron nail to produce an electromagnet. Which action should the student take to increase the number of paper clips the electromagnet can pick up? He should reduce the number of turns. He should replace the iron nail with a plastic spoon. He should add another battery. He should decrease the current through the wire.
He should add another battery. Increasing the voltage from the battery will increase the current flowing through the wire, making the electromagnet stronger and able to pick up more paper clips.
