Electricity: Ohm's law

Front

What happens to the current if you decrease the resistance in a circuit?

Back

Current increases.

Front

What is Resistance?

Back

The ability to reduce the flow of electrons.

Front

What is current measured in?

Back

A (Amps).

Front

What happens to the current if the voltage stays the same and resistance is increased?

Back

Current will decrease.

Front

What is the name for the pressure that forces electrons to flow through a circuit?

Back

Voltage.

Front

What is Ohm's Law?

Back

Ohm's Law states that Voltage = Current x Resistance.

Front

What is the unit of Voltage?

Back

Volts (V).

Front

What is the relationship between Voltage, Current, and Resistance?

Back

Voltage is directly proportional to current and resistance.

Front

If the resistance in a circuit is 10 Ohms and the current is 2 Amps, what is the voltage?

Back

Voltage = Current x Resistance = 2 A x 10 Ω = 20 V.

Front

What happens to the brightness of a bulb if the current increases?

Back

The bulb gets brighter.