A parallel plate air capacitor has a capacitance of 50μF . The plates are at a distance d apart. If a slab of thickness t(t≤d) and dielectric constant 4 is introduced between the parallel plates, then the capacitance will be
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a
50 μF
b
100 μF
c
200 μF
d
500 μF
answer is B.
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Detailed Solution
Capacitance will increase but not 4 times (because dielectric is not filled completely). Hence new capacitance may be 100 μF.