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The capcity of a parallel plate condense...

The capcity of a parallel plate condenser is `10 muF`, when the distance between its plates is `8 cm`. If the distance between the plates is reduced to `4 cm`, then the capacity of this parallel plate condenser will be

A

`5 mu F `

B

`10 mu F`

C

`20 mu F `

D

`40mu F `

Text Solution

Verified by Experts

The correct Answer is:
C
`C=(Ain _(0))/(d ) therefore C prop (1)/(d) `
if d is halved , C is doubled
` therefore C_(" new ") = 2C _("old")= 2 (10 mu F) = 20 mu F `
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