An electric current is produced using a bar magnet and a solenoid. Which changes will cause a decrease in the electric current produced? Choose two correct answers.

The induced current depends on how quickly the magnetic field through the solenoid changes. Moving the magnet more slowly changes the field more gradually, so it produces less current. Using fewer wire loops also reduces the induced voltage and current; therefore, “moving the magnet more slowly” and “using fewer wire loops in the solenoid” are correct. A stronger magnet or more loops generally increases the induced current, and moving the solenoid instead of the magnet can still produce induction if there is relative motion.

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