Questions
Effective capacitance of parallel combination of two capacitors and is 10F. When these capacitors are individually connected to a voltage source of 1 V, the energy stored in the capacitor is 4 times that of . If these capacitors are connected in series, their effective capacitance will be:
detailed solution
Correct option is A
Given : Capacitors connected in parallel : C1+C2=10μF........(i)Now, they are connected individually to same voltage source. ∴4×Energy in C1 = Energy in C2 ⇒412C1V2=12C2V2 ⇒4C1=C2........iifrom equation (i) & (ii) C1=2μF C2=8μF If they are in series Ceq.=C1C2C1+C2=2×82+8=1.6μFSimilar Questions
Figure shows two capacitors C1 and C2 connected with 10 V battery and terminal A and B are earthed. The graph shows the variation of potential as one moves from left to right. Then the ratio C1/C2 is
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