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Question
Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 Ω resistor, an 8 Ω resistor, and a 12 Ω resistor, and a plug key, all connected in series.
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 5 Ω, 8 Ω and 12 Ω, 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.
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