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How many electrons flows 1mu A current i...

How many electrons flows `1mu A` current in 1s?

A

`625 xx 10^(9)`

B

`625 xx 10^(12)`

C

`625 xx 10^(8)`

D

`625 xx 10^(15)`

Text Solution

Verified by Experts

The correct Answer is:
B
Given, Time (t)= 1s
Current, `l= 1mu A= 1 xx 10^(-6)A`
As we know that, Charge (q)= ne ...(i)
Here, n= number of electrons and e= charge on electron `=1.6 xx 10^(-19)C`
Since q= lt ...(ii)
From Eq (i) we get ne = lt
`n= (l t)/(e )= (10^(-6)xx 1)/(1.6 xx 10^(-19))`
`=625 xx 10^(12)` electrons
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