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(i) What happens to the magnitude of the charge on each plate of a capacitor if

ID: 2069781 • Letter: #

Question

(i) What happens to the magnitude of the charge on each plate of a capacitor if the potential difference between the conductors is doubled?

It becomes four times larger.
It becomes two times larger.
It is unchanged.
It becomes one-half as large.
It becomes one-fourth as large.


(ii) If the potential difference across a capacitor is doubled, what happens to the energy stored?
It becomes four times larger.
It becomes two times larger.
It is unchanged.
It becomes one-half as large.
It becomes one-fourth as large.

Explanation / Answer

a) C =Q/V,   Q = CV

IF V IS DOUBLED, CHERGE ALSO DOUBLES. I.E It becomes two times larger.

b) u = v^2/2C, if V is doubled, It becomes four times larger.