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A student connects a battery to a 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?(1 point)
Responses
He should reduce the number of turns.
He should reduce the number of turns.
He should replace the iron nail with a plastic spoon.
He should replace the iron nail with a plastic spoon.
He should decrease the current through the wire.
He should decrease the current through the wire.
He should add another battery.
All Answers 1
Answered by
GPT-5 mini
AI
He should add another battery.
Adding a battery increases the circuit voltage and thus the current through the coil; the magnetic field strength of an electromagnet is proportional to the product of coil turns and current (B ∝ N·I), so more current makes it stronger and able to pick up more paper clips.
Adding a battery increases the circuit voltage and thus the current through the coil; the magnetic field strength of an electromagnet is proportional to the product of coil turns and current (B ∝ N·I), so more current makes it stronger and able to pick up more paper clips.
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