A current of 10 A flows through a conductor for two minutes.
The expressions that relate (i) Q, I and t and (ii) Q, V and W respectively are (Here the symbols have their usual meanings) :
An electric source can supply a charge of 750 coulomb. If the current drawn by a device is 15 mA, find the time in which the electric source will be discharged completely.
The filament of an electric lamp draws a current of 0·5 A, which lights for 2 hours. Calculate the charge that flows through the circuit.
An electric source can supply a charge of 500 coulomb. If the current drawn by a device is 25 mA, find the time in which the electric source will be discharged completely.
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