Ohm's law

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. It can be expressed as V = I × R.

Front

What is resistance measured in?

Back

Ω (Ohms)

Front

If the Voltage stays the same and Resistance is increased, what happens to Current?

Back

Current will Decrease.

Front

What is the formula to calculate current using Ohm's Law?

Back

I = V / R

Front

What is the unit of Voltage?

Back

V (Volts)

Front

What is the unit of Current?

Back

A (Amps)

Front

What is the unit of Power?

Back

W (Watts)

Front

What is Resistance?

Back

The ability to reduce the flow of electrons.

Front

In a circuit with a 24 volt battery and an 8 ohm resistor, how many amps are running through the circuit?

Back

3 Amps

Front

What size resistor would produce a 3 Amp current flow with a 12 Volt battery?

Back

4 Ohms