if the radius of circular capacitor plates is doubled,the c of capacitor will increase by a factor of 4.explain

Asked by amit yadav | 21st Nov, 2010, 08:01: AM

Expert Answer:

Dear student,
Capacitance = ε A / d
Here, in case of circular plates, A = pi r^2
Hence, we see that c is proportional to square of r
so, if  r is doubles, C increases by 4 times.
Hope this helps.
Thanking you

Answered by  | 25th Nov, 2010, 06:01: PM

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