You can investigate voltage across cells and lamps in a series and parallel circuit by connecting the following circuits. Put one voltmeter in position V 1 and record the reading in a suitable table.

Key fact In a parallel circuit, the voltage across each branch equals the supply voltage. Resistance When resistors are connected in parallel, total resistance, R, is calculated using the equation: ...

Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to produce ...