Question

what is the best example of a device that converts electrical energy ⇒ thermal energy?

a flashlight

a clock radio

a toaster

an electric toothbrush

Explanation:

To determine the device that converts electrical energy to thermal energy, we analyze each option:

• A flashlight converts electrical energy to light (and some heat, but light is primary).
• A clock radio converts electrical energy to sound and maybe some heat, but sound is a main output.
• A toaster uses electrical energy to generate heat (thermal energy) to toast bread, so its primary energy conversion is electrical to thermal.
• An electric toothbrush converts electrical energy to mechanical energy (for the brushing motion).

Answer:

C. A toaster