Electricity WorksheetExample 1If the bulbs in the circuit below are identical, what happens when the switch is closed?

Example 2The power rating of a 1000W heater specifies the power consumed when the heater is connected to a voltage of 120V. If two such heaters are connected in series across the same voltage explain why the total power consumed is not 2000W.Example 3You are given two bulbs, one rated at 40W at 120V and the other rated at 100W at 120V. Contrast their brightness if they are put in series with a 120V supply. Example 4Two 1.5V batteries and a bulb are connected together in three different ways, as shown below:

In which arrangement is the bulb the brightest? And in which arrangement is it the least bright? Explain the differences between the circuits. Example 5The cube shown below is made from an insulating material, except the edges which are made from a conductor with a resistance R. Determine the resistance between;1) 1 and 22) 1 and 31432

3) 1 and 4

Example 6 - wheatstoneDetermine the resistance of Rx and the voltage across the voltmeter, Rg?What could this circuit be used to calculate?

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