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Two charges are at a distance d apart. I...

Two charges are at a distance `d` apart. If a copper plate (conducting medium) of thickness `d//2` is placed between them , the effictive force will be

A

2F

B

F/2

C

0

D

`sqrt2F`

Text Solution

Verified by Experts

The correct Answer is:
C
If a dielectric medium is partially filled between the charges.
`F =1/(4piepsilon_0).(Q_1Q_2)/((r-t+tsqrtk)^2)`
For conductor -
Dielectric constant k `rarroo`
Effective separation `= (r-t+t sqrtk) rarroo` , hence F = 0
Note: Effective air separation between them becomes infinite, so force becomes zero.
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