Electrical Power Review

Front

What is the unit of energy?

Back

Joule

Front

Calculate the voltage applied when a 60 watt light-bulb uses a current of 5 amps.

Back

12 volts

Front

What is the unit of Electrical Power?

Back

Watt

Front

What is the power of a 20V bulb with 5A through it?

Back

100W

Front

If the hair dryer and the vacuum cleaner are both on, what is the power used?

Back

2600 watts

Front

Define Electrical Power.

Back

Electrical Power is the rate at which electrical energy is transferred by an electric circuit, measured in watts.

Front

What is the formula for calculating power in an electrical circuit?

Back

Power (P) = Voltage (V) × Current (I)

Front

What does 1 Watt represent?

Back

1 Watt is equal to 1 Joule per second.

Front

What is the relationship between voltage, current, and resistance in a circuit?

Back

Ohm's Law states that Voltage (V) = Current (I) × Resistance (R).

Front

What is the unit of current?

Back

Ampere (Amp).