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Question
In a conductor, 6.25×1016 electrons flow from its end A to B in 2 s. Which is the current flowing through conductor? (e=1.6×10−19C)
In a conductor, 6.25×1016 electrons flow from its end A to B in 2 s. Which is the current flowing through conductor? (e=1.6×10−19C)
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Solution
The correct option is A 5mA from B to A.
In the question, it is given that the charge of an electron is e=1.6×10−19C.
Therefore, the total charge flowing through the wire in 2 seconds will be given as 6.25×1016×1.6×10−19C=10×10−3C.
The rate of flow of charge is therefore 10×10−3 C2 seconds=5×10−3C/s.
one C/s = one amp.
Hence, the current flowing through a conductor is 0.0005A, that is 5mA.
In the question, it is given that the charge of an electron is e=1.6×10−19C.
Therefore, the total charge flowing through the wire in 2 seconds will be given as 6.25×1016×1.6×10−19C=10×10−3C.
The rate of flow of charge is therefore 10×10−3 C2 seconds=5×10−3C/s.
one C/s = one amp.
Hence, the current flowing through a conductor is 0.0005A, that is 5mA.
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