An electric bulb draws a current of 250 milli-ampere (mA) for 20 minutes. Calulate the amount of electric charge flowing through the circuit.
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According to the equation.
I =Q/t
Q =?
I=0.25 A
t=20 min
Except power who time is in hours all others are I seconds so.
T= 20×60
Q=It
= 20× 60× 0.25
= 300 C
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12.5 miliampere per minute
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