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A current of 1 mA flows in a conductor. The rate of flow of electrons is1) 6.25x10^18 2) 6.25x10^153) 0.625x10^18 4) 6.25​

Answer»

Answer:

2) 6.25x10^15

Explanation:

1ma= 1000 x 1 A

=1000 A

When 1000 COULOMB charge flow through a wire in 1 second then the current through the wire is 1000 AMPERE.

I=Q/t

1 Ampere = 1 Coulomb /1 Second

Charge on 1 ELECTRON = 1.6 x 10^-19 Coulomb

By unitary method,

If 1.6 x 10^-19 Coulomb / Second (Ampere) = Current by 1 electron

then, 1( Coulomb / Second) or (Ampere) = 1000 / (1.6 x 10^-19) electrons

i.e, 6.25 x 10^15 electrons.

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