How does an electric generator work? a the axle rotates the armature in the magnetic field of a permanent magnet, which induces an electric current. b the armature rotates the axle in the magnetic field of a permanent magnet, which induces an electric current. c the axle rotates the armature in the magnetic field of an electromagnet, which induces an electric current. d the armature rotates the axle in the magnetic field of an electromagnet, which induces an electric current.

A.The axle rotates the armature in the magnetic field of a permanent magnet, which induces an electric current.

Explanation:

C The axle rotates the armature in the magnetic field of an electromagnet, which induces an electric current.

Explanation:

According to Faraday's law, by rotating a coil within a magnetic field, there is a variation in the magnetic flux of that field through the coil, which induces an electric current. Therefore, when the axles rotates the armature an electric current is induced. The electromagnet is used more frequently than a permanent magnet, due to its greater power.

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y