If a dielectric is inserted bw the plates of a 20 microfarad capacitor, it's capacitance will be A. Remain same
B. Be doubled
C. Be halved
D. Become zero
(Ans with explanation please)

will be doubled

Explanation:

This is because when a dielectric material is inserted between the plates of capacitors the capacitance increases to

c = ke Co .

where ke is called the dielectric constant and Co is the capacitance without a dielectric material

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

close lines strong magnet less close weaker