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  • If a current of 0 .5 ampere flows through a metallic wire for 2 hours then how many electrons would flow through the wire?

3.10     If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire?

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Firstly we will find total charge flown through the wire then we will calculate number of electrons.

We are given :-         I = 0.5 A,    Time = 2 hours = 7200 seconds.

We have,                  Q = I.t

                                    = (0.5)7200 = 3600 C.

Now we will convert charge into number of electrons.

We know that                 96487\ C = 6.023\times10^{23}\ No.\ of\ electrons    

So toal number of electrons :

                                                    =\frac{3600}{96487}\times 6.023\times10^{23}

or                                                 =2.25\times 10^{22} no. of electrons will flow through wire.

Posted by

Devendra Khairwa

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