12/17- Final Review Day 2

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

Give an example of kinetic energy.

Back

A moving car is an example of kinetic energy.

Front

How do you calculate power in an electrical circuit?

Back

Power (P) is calculated using the formula P = IV, where I is current in amperes and V is voltage in volts.

Front

What is the power drawn by a 15 amp load on a 100v supply?

Back

1,500 watts.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

What is one advantage of electromagnets?

Back

They can be switched on or off.

Front

What happens when the direction of a magnet is changed when inserted into a loop of wire?

Back

The voltage will be the same amount, but in the opposite direction.

Front

What is electrical resistance?

Back

Electrical resistance is a measure of the opposition to the flow of electric current, measured in ohms.

Front

What is the unit of electrical resistance?

Back

Ohms.

Front

What is the relationship between voltage, current, and resistance?

Back

This relationship is described by Ohm's Law: V = IR, where V is voltage, I is current, and R is resistance.