"Resistance Power and Electricity"

>Electricity in wires is a flow of electrons along the wire. As the electrons move along the wire they collide with the metal atoms. These collision make the atoms vibrate more…which makes the metal hotter. Resistance is a measure of how much a material tries to stop electricity passing through it.</span>

We can express Ohm's Law mathematically using the equation:

Voltage (v) = Current (a) × Resistance (Ω)

We can express the relationship between current, voltage and power mathematically using the equation:

Power (w) = Current (a) × Voltage (v)