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Question

# Determine the current in 2 Ω resistor1 A1.5 A0.9 A0.6 A

A
1.5 A
B
1 A
C
0.9 A
D
0.6 A
Solution
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#### A fully charged capacitor no current draws from cell. So, no current flow in the capacitor branch and corresponding circuit is shown in figure.Total resistance of the circuit is Rt=2.8+2||3=2.8+2×32+3=2.8+1.2=4ΩCurrent in the circuit is I=64=1.5AIf I1 and I2 are the current through 2Ω and 3Ω respectively, then I=I1+I2...(1)As 2Ω and 3Ω are in parallel so V2Ω=V3Ω or 2I1=3I2⇒I2=(2/3)I1now, (1) becomes, 1.5=I1+(2/3)I1=5I13or I1=1.5×35=0.9A

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