Using a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is connected to the first capacitor in parallel. If the final voltage across the second capacitor is 20 V, its

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Using a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is connected to the first capacitor in parallel. If the final voltage across the second capacitor is 20 V, its capacitance is : (in pF)

Quantrex Academy · Accepted Answer

Correct answer: B. 200

New potential = C ₀ ~V ₀ C ₀+ C = V ₀ 3 aligned & 3 C ₀ ~V ₀= C ₀ ~V ₀+ CV ₀ & 2 C ₀ ~V ₀= CV ₀ & C 2 C ₀ aligned

Using a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is connected to the first capacitor in parallel. If the final voltage across the second capacitor is 20 V, its capacitance is : (in pF)

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