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An insulating pipe of cross-section area...

An insulating pipe of cross-section area `A` contains an electrolyte which has two types of ions: their charges being-e and `+ 2e`. A potential difference applied between the ends of the pipe result in the drifting of the two types of ions, having drift speed `= v (- ve ion)` and `v//4(+ ve ion)`. Both ions have the same number per unit volume `= n`. The current flowing through the pipe is

A

nev`A//2`

B

nev `A//4`

C

`5` nev `A//2`

D

`3` nev `A//2`

Text Solution

Verified by Experts

The correct Answer is:
D
`I=I_((-e))+I_((+2))`
`I="ne"Av+n(2e)A(v/4)`
`="ne"Av+("ne"Av)/2=3/2 "ne"Av`
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