Concept:A generator converts mechanical energy into electrical energy using electromagnetic induction.
Explanation:A generator takes mechanical energy from an external source, such as a turbine or engine.
This mechanical energy rotates a coil or armature inside a magnetic field.
According to Faraday's law, the changing magnetic flux induces an emf:
e=−dtdΦ​.
This induced emf drives current in the external circuit, producing electrical energy.
Therefore, the conversion is: mechanical energy
→ electrical energy.
A motor does the opposite, converting electrical energy into mechanical energy.
A heater converts electrical energy to heat energy, and a heat engine converts heat to mechanical energy.
Answer:Option B: mechanical energy to electrical energy.