Q.

A parallel plate air capacitor has a capacitance of 100μF. The plates are at a distance d apart. If a slab of thickness    and dielectric constant 5 is introduced between the parallel plates, then the capacitance will be

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a

b

c

d

answer is C.

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Detailed Solution

Capacitance will increase but not 5 times (because dielectric is not filled completely). Hence new capacitance may be 200 μF.
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A parallel plate air capacitor has a capacitance of 100μF. The plates are at a distance d apart. If a slab of thickness    and dielectric constant 5 is introduced between the parallel plates, then the capacitance will be