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Sample Problem. An electric bulb draws a current of 0.25 A for 20 minutes. Calculate the amount ofelectric charge that flows through the circuit.

Answer»

Question- An electric bulb draws a current of 0.25 A for 20 minutes. Calculate the amount of electric charge that flows through the circuit.

Solution:According to question,Current, I=0.25 ATime, t=20 minutes=20 x 60 seconds [As, 1 minute=60 seconds]=1200 secondsNow, we have a relation,I=Q/tOr Q=I x tPutting the values, we getQ=0.25 x 1200=300 coulombsTherefore, the amount of charge that flows through the circuit is 300 coulombs.

the right answer is 300 coulombs



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