A metal wire carries a current of 4 ampe...

A metal wire carries a current of `4` ampere. How many electrons pass through a point in the wire in one second?

Text Solution

Verified by Experts

Total charge passed in `1` sec. `= 4 xx 1`
`= 4` coulomb `(because Q = i xx t)`
`:. 1` Faraday or `96500 C` current carried by
`= 6.023 xx 10^(23)` electrons
`:. 4` coulomb current carried by `= (6.023 xx 10^(23) xx 14)/(96500)`
`= 2.5 xx 10^(9)` electrons

Topper's Solved these Questions

ELECTROCHEMISTRY
P BAHADUR|Exercise (B) ELECTRODE POTENTIAL AND EMF|1 Videos
ELECTROCHEMISTRY
P BAHADUR|Exercise (D) ELECTROCHEMICAL SERIES|1 Videos
ELECTROCHEMISTRY
P BAHADUR|Exercise Exercise (9) ADVANCED NUMERICAL PROBLEMS|36 Videos
DILUTE SOLUTION AND COLLIGATIVE PROPERTIES
P BAHADUR|Exercise Exercise 9 Advanced Numerical|12 Videos
MOCK TEST PAPER
P BAHADUR|Exercise Exercise|92 Videos

A metal wire carries a current of 1 ampere. The number of electrons passing a given point in the wire in 1 second is

`6.24 xx 10^(20)`

`6.24 xx 10^(16)`

`6.24 xx 10^(18)`

`6.24 xx 10^(14)`

A conducting wire carries a current of 0.965 ampere. Rate of flow of electrons per second at a given point is :

`1xx10^(-5)N_(A)`

`N_(A)`

`0.965N_(A)`

`(N_(A))/(0.965)`

A current of 1 mA is flowing through a copper wire. How many electrons will pass a given point in one second [e = 1.6 xx 10^(19) Coulomb]

`6.25 xx 10^(19)`

`6.25 xx 10^(15)`

`6.25 xx 10^(31)`

`6.25 xx10^(8)`