Energy Conversion in Devices Steps:

• Identify kinetic energy as energy of motion, like wind or moving parts.
• Determine which device uses motion to generate electricity via electromagnetic induction.
• Eliminate options that produce or consume energy differently.
• Select the device that directly converts mechanical motion to electrical current.

Why D is correct:

• A wind turbine uses the kinetic energy of wind to spin blades, driving a generator that converts mechanical energy to electrical energy through Faraday's law of electromagnetic induction.

Why the others are wrong:

• A. A car battery stores chemical energy and converts it to electrical energy, not kinetic.
• B. An electric fire converts electrical energy to heat energy via resistance.
• C. An electric motor converts electrical energy to kinetic energy.

Final answer: D