If a potential difference of 10 V causes a current of 2 A to flow for 1 min, how much energy is
transfered?
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Explanation:
Potential difference, V = 10 V
Current, I = 2 A
Time, t = 1 minute (1 x 60)s = 60 s We know that the amount of energy transferred is equal to the work done.
Now:
V = W/Q
Or W = V x Q
= V x/d (since Q = Ixt)
= 10 x 2 x 60
= 1200 J
Thus, the amount of energy transferred
is 1200 J.
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