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प्रश्न
A current of 0.2 A flows through a wire whose ends are at a potential difference of 20 V. Calculate the heat energy produced in 1 minute.
संख्यात्मक
उत्तर
Here I = 0.2 A,
V = 20 V,
t = 1 min = 60 sec
The heat energy produced in 1 min. W = VI t
= `[20 xx 2/10 xx 60]`
W = 240 J
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Measurement of Electrical Energy (Expression W = QV = Vlt)
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