Which statement best defines a generator?

Which statement best defines a generator?

• A. Any device that converts mechanical motion into electrical energy
• B. A device that stores electrical energy
• C. A device that converts electrical energy into chemical energy
• D. A device that converts electrical energy into mechanical energy

Answer: (A)

A generator takes motion and turns it into electricity. When a conductor moves in a magnetic field, or the magnetic field around a conductor changes, electrical energy is induced. This is how a turbine, crank, or other source of mechanical energy becomes electrical energy that can power lights and devices. It’s different from storing energy (like a battery stores chemical energy) or converting electricity into another form like chemical energy (charging a battery) or mechanical energy (an electric motor). So the statement that describes converting mechanical energy into electrical energy is the one that fits a generator.

A generator takes motion and turns it into electricity. When a conductor moves in a magnetic field, or the magnetic field around a conductor changes, electrical energy is induced. This is how a turbine, crank, or other source of mechanical energy becomes electrical energy that can power lights and devices. It’s different from storing energy (like a battery stores chemical energy) or converting electricity into another form like chemical energy (charging a battery) or mechanical energy (an electric motor). So the statement that describes converting mechanical energy into electrical energy is the one that fits a generator.