# 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?

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

So toal number of electrons :

or                                                  no. of electrons will flow through wire.

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