Question

A capacitor with air as the dielectric is charged to
a potential of 100 volts. If the space between the
plates is now filled with a dielectric of dielectric
constant 10, the potential difference between the
plates will be
(a) 1000 volts
b) 100 volts
(c) 10 volts
(d) zero
​

Answer 1

Potential difference is inversely proportional to capactiance

and capacitance is directly proportional to dielectric constant

So if dielectric constant is increased from 1 to 10 that is10 times

So potential will decrease to 1/10 times

1/10. × 100 = 10 volts

c) 10 volts

Answer 2

Answer-10 volt is the right answer.