Q11. Find in your household at least three appliances and/or tools that use electric energy to

produce mechanical energy. Hint: Most appliances and/or tools convert electric energy into

rotational kinetic energy.

AC and DC

Direct Current (DC)

• Electrons flow in one direction through the circuit and/or wires.

Produced by solar cells and batteriesla battery is a combination of chemical cells)

> Electrons flow through the circuit starting at the negative terminal (which repeis the elections to the positive terminal fic

Alternating Current (AC)

> Electric current from the outlets in your home school, or work are alternating current

AC is usually produced by a generator using the principle of electromagnetic induction

which attracts the electron

In a generator, either the magnet or a coil of wire spins. Because of this the generator's terminals switch for alternatel between positive and negative

Electrons are repelled by the negative terminal and attracted to the positive terminal.

Since the two terminals are constantly switching (positive to negative and back to positive the current keeps changing direction (alternating.