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3 capacitor having capacitance 8.4,8.2and 4.2microfard are connected in series across a 36V potential difference.
(A)what is total energy stored in all 3 capacitor?
(B)the capacitors are connected from potential difference without allowing them to discharge.they are reconnected in parallel with each other,with positively charged plates connected together. what is voltage across each capacitor in parallel combination?
please give the whole solution.
Dear shefali
capacitors are connected in series
so equivalent capacitance 1/C =1/C1 + 1/C2 + 1/C3
=1/8.4 + 1/8.2 + 1/4.2
C = 2.087 μF
so Total energy stored U = 1/2 C V2
= 1352.37 μJ
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