1.

A capacitor of capacitance 50 muF is charged to 100 volts. Its energy is equal to

Answer»

`25 xx 10^(-2) J`
`25 xx 10^(-3) J`
`25 xx 10^(-4) J`
`25 xx 10^(-6) J`

Solution :Electrostatic ENERGY `u =1/2 CV^2= 1/2 xx (50 xx 10^(-6)) xx (100)^2 = 25 xx 10^(-2)J`


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