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Gauss's law is true only if force due to...

Gauss's law is true only if force due to a charge varies as

A

`r^(-2)`

B

`r^(-4)`

C

`r^(-1)`

D

`r^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`r^(2)`
Explanation As `phi=(q)/(epsi_(0))`
`phi=EA`
`phi=(1)/(4piepsi_(0))(q)/(r^(2))A`
or `F=(1)/(4piepsi_(0))(q)/(r^(2))A`
Hence `Fprop(1)/(r^(2))`
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