Capacitors 2 μF, 3 μF and 5 μF can withstand maximum voltages 3 V, 2 V and 1 V respectively. Their series combination can withstand a maximum applied voltage of:
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Question

Capacitors 2 μF, 3 μF and 5 μF can withstand maximum voltages 3 V, 2 V and 1 V respectively. Their series combination can withstand a maximum applied voltage of:

G1 Physics · Accepted Answer

In series, all capacitors carry the same charge. The maximum allowed common charge is min(CVₘₐₓ)=min(6,6,5) μC =5 μC. Total voltage is Q(1/2+1/3+1/5)=5×31/30=31/6 V. Correct answer: B.