7.9 Ohm's Law

Ohm's Law

Battery and bulb to explain, with numerical examples. Duration: 6:07

Ohm's Law

The relationship between electric current, voltage, and resistance is spelled out as an exact equation known as Ohm's Law. Duration: 2:57.

Voltage Drop

Why the sum of the voltages across bulbs in series adds to battery voltage. Duration: 5:18