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In a regular polgyon of n sides, each co...

In a regular polgyon of n sides, each cormer is at a distance r from the center . Identical chargs are placed at ( n-1) corners . At the center, the intensity is E and the potential is `VM`. The ratio ` V//E` has magnitude .

A

` r n`

B

` r (n -1)`

C

` (n -1) //r`

D

` r(n -1) //n`

Text Solution

Verified by Experts

The correct Answer is:
B
`E =K q/r^2` and ` V= (K(n-1)q)/r`
so ` V/E = ((n-1))/r xx r^2 rArr V/E = (n-1)r`
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