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Hi!

we have been given the value of capacitance and the voltage which are 50F and 4kV or 4* 10^3V they are asking us to calculate the value of energy associated.

E=1/2 x c x V^2

E= 1/2 x 50 x (4 x 10^3)^2

E= 400 x 10^6J or we can write it as 400MJ .

I’m not getting the right answer and i guess this is the right approach for this question.

Are you getting the same answer?

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yep shouldn’t it be 4V because otherwise it can’t be 400J. This is the only approach. U=1/2 CV^2

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