Answer to Question #165002 in Electric Circuits for Zaeem

Question

suppose you wish to store 1.0 kW.s in a parallel plate capicator when a potential difference of 10V is applied across its plates What must be the capacitance of your parallel plate capacitor

Answer 1

Energy stored in a parallel plate capacitor$(U)= \frac{1}{2}CV^2$

Given, $U= 1.0\ KW.s=1000\ J$

$V= 10\ V$

Substituting these values in above equation,

$1000=\frac{1}{2}C(10)^2\implies C=20\ F$