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Question

How many electrons flow through an electric bulb every second, if the current that passes through the bulbs is 1.6 A.

Solution
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Given: an electric bulb
To find the number of electrons flowing through an electric bulb every second, if the current that passes through the bulbs is 1.6A
Solution:
Use the relation,
I=Qt=net, where n =number of electrons and e = charge on 1 electron and t = time
Using thevallues given in the question we can write,
1.6A=n×e1sec
n=1.61.6×1019 [ charge on 1 electron = 1.6×1019C]
n=1019
are the required number of electrons.

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