Question

Compare the power used in the 2 12 resistor in each of the following circuits:
i) a 6 V battery in series with 1ohm and 2ohm resistors, and (ii) a 4 V battery in parallel
with 12ohm and 2ohm resistors,​

Answer 1

Answer:

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Explanation:

(ii) 4 V battery in parallel with 12 Ohm and 2 Ohm resistors

12 Ohm and 2 Ohm resistors are connected in parallel. The voltage across each component of a parallel circuit remains the same. Hence, the voltage across 2 Ohm resistor will be 4 V. Therefore, the power used by 2 Ohm resistor is 8 W.