Ohm's law in action

The following series of diagrams show the relationship of power (watts), current (amps), voltage (volts) and resistance (ohms) according to Ohm's law.

A circuit with 6 volt battery and 3 ohms resistance has 2 amps current flow and has a power dissipation of 12 watts.

A circuit with 12 volt battery and 3 ohms resistance has 4 amps current flow and has a power dissipation of 48 watts.

A circuit with 24 volt battery and 3 ohms resistance has 8 amps current flow and has a power dissipation of 192 watts.

A circuit with 6 volt battery and 6 ohms resistance has 1 amp current flow and has a power dissipation of 6 watts.

A circuit with 6 volt battery and 12 ohms resistance has 0.5 amps current flow and has a power dissipation of 3 watts.

A circuit with 24 volt battery and 6 ohms resistance has 4 amps current flow and has a power dissipation of 96 watts.

A circuit with 24 volt battery and 12 ohms resistance has 2 amps current flow and has a power dissipation of 48 watts.