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n charges Q,4Q,9Q,16Q…. are placed at di...

`n` charges `Q,4Q,9Q,16Q….` are placed at distance of `1,2,3…..` metre form a point `0,`on the same straight line .The electric intensity at `0` is

A

`(Q)/(4piepsilon_(0)n^(2))`

B

`(Q)/(4piepsilon_(0)n)`

C

Infinity

D

`(nQ)/(4piepsilon_(0))`

Text Solution

Verified by Experts

The correct Answer is:
4
`E=(1)/(4piepsilon_(0))[(Q_(1))/(x_(1)^(2))+Q_(2)/(x_(2)^(2))+….+(Q_(n))/(x_(n)^(2))]`
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