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Question
When a current I flows through a resistance R for time t, the electrical energy spent is given by ______.
Options
IRt
I2Rt
IR2t
I2R/t
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Solution
When a current I flows through a resistance R for time t, the electrical energy spent is given by I2Rt.
Note: Electrical energy (W) = I²Rt = VIt = `("V"^2"t")/"R"`
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