Find the current flowing through the resistance R1 of the circuit shown in the figure if the resistances are equal to R1=10Ω,R2=20Ω,R3=30Ω and the potentials of the points 1,2 and 3 are equal to V1=10V,V2=6V and V3=5V.
A
0.30A
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B
0.20A
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C
0.40A
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D
0.50A
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Solution
The correct option is B0.20A
Let current in R1 be I1 and R2 be I2 and R3 be I3 respectively away from the junction.