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A condenser of $100\; \mu F$ is charged to $50 V$. What is its energy in Joules?

$(a)\;1.25J\qquad(b)\;0.125 J\qquad(c)\;12.5J\qquad(d)\;0.0125J$

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  • Energy stored in a charged capacitor $E = \large\frac{1}{2} $$CV^2$
Given $C = 100 \;\mu F$ and $V = 50V$,
$E = \large\frac{1}{2} $$CV^2$$ = \large\frac{1}{2}$$ \times 100 \times 10^{-6} \times 50^2 = 0.125$ J

 

answered Dec 20, 2013 by balaji.thirumalai
edited Jul 29, 2014 by thagee.vedartham
 

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