If the potential difference across a capacitor is doubled, what happens to the energy stored?
A
It becomes two times larger.
B
It becomes four times larger.
C
It is unchanged.
D
It becomes one-half as large.
E
It becomes one-forth as large.
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Solution
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Correct option is A. It becomes four times larger. Because $$U_E=\dfrac{1}{2}C(\Delta V)^2$$.
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