For driving current of 2A for 6 minute in a circuit, 1000 J of work is to be done. What is the emf the source of the circuits?
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Current passing through circuit (I) = 2A
Time of operation (t) = 6 minute = 360 s
Work done (W) = 1000J
Using W = VIt
1000 = V(2) (360)
V = 1.38 volts
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