Which best describes what happens in an electric generator? motion causes constantly changing magnetic fields to induce electrical energy. motion causes constantly changing magnetic fields to induce kinetic energy. constantly changing magnetic fields lead to motion, which induces electrical energy. constantly changing magnetic fields lead to motion, which induces kinetic energy.

Explanation :

Electric generator:

The electric generator is based on the principle of electromagnetic induction. It converts mechanical energy into electrical energy. The rotor rotates in the magnetic field so as to induce an EMF at the ends of the conductors.

So, the statement that describes an electric generator is motion causes constantly changing magnetic fields to induce electrical energy.

Hence, the correct option is (A).