Problem 1.9: A coil of 12 Ohms resistance is in parallel with a coil of 20 Ohms resistance. This combination is connected in series with a third coil of 8 Ohms resistance, The whole circuit is connected across a battery having an e.m.f. of 30 V and internal resistance of 2 Ohms. Calculate (a) the terminal voltage of the battery and (b) the power in the 12 Ohm coil.

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