Through a device 5 Coulomb charge flows for 2 seconds.Find the power of the device if the voltage is 240.Also find the heat produced by the device?
300W,600J
650W,1250J
600W,1200J
500W,1000J
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A current of 1 ampere is said to flow when 1coulomb of charge passes a given point in 1 sec.
Charge flowing through a conductor in one second is given as charge=current×time. It is given that the current through the conductor is 1.6 mA, that is, 1.6×10−3 A
Therefore, charge =1.6×10−3×1=1.6×10−3C.
Number of electrons passing through the conductor in one second is given as eQ=1.6×10−191.6×10−3=1016
Hence, the number of electrons passing through the conductor in 1 second is 1016
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