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Cyclinder is charged by 10mC. Length of ...

Cyclinder is charged by 10mC. Length of cyclinder is 1km and radius is 1 mm. Surface charge density of cyclinder is

A

`1.59xx10^(-4)C//m^(2)`

B

`1.59xx10^(-2)C//m^(2)`

C

`1.59xx10^(-3)C//m^(2)`

D

`1.59xx10^(-5)C//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`q=10mC,l=1km,r=1mm,sigma=?`
`sigma=Q/A=(q.l)/(2pirl)=q/(2pir)`
`=(10xx10^(-6))/(2xx3.14xx1xx10^(-3))`
`=1.59xx10^(-3)C//m^(2)`
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