AC generators combine physical motion and ________ to produce a current.

• A. Electricity
• B. Resistance
• C. Magnetism
• D. Capacitance

Answer: (C)

When a generator draws on electromagnetic induction, motion in a magnetic field is what creates the current. As the rotor spins, the magnetic field through the coils changes, inducing an electromotive force that drives current through the circuit. The current in an AC generator reverses direction as the coil orientation relative to the magnetic field changes, giving alternating current.

Electricity is the result produced, but it’s not what enables the generation. Resistance affects how much current flows, not whether current is produced. Capacitance isn’t a defining part of the basic generation process. Therefore magnetism is the essential factor that enables current to be produced in this setup.