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Question
Calculate the power used in the 2 Ω resistor in each of the following circuits: a 4 V battery in parallel with 12 Ω and 2 Ω resistors.
Solution
As the battery is connected in parallel to the 12 Î and 2 Î resistors, the potential difference across them will be the same.
Therefore, the power
`P=V^2/R`
`P=4^2/2=16/2= 8 W`
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