Question 1 Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5Ω resistor, a 8Ω resistor, and a 12Ω resistor, and a plug key, all connected in series.
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Solution
Three cells of potential 2 V, each connected in series. Therefore the potential difference of the battery will be 2 V + 2 V + 2 V = 6V. The following circuit diagram shows three resistors of resistances 5Ω,8Ω and 12Ω respectively connected in series and a battery of potential 6 V and a plug key which is closed, means the current is flowing in the circuit.