CBSE Class 12-science Answered
In the circuit shown, R1 = 4 Ω, R2 = R3 =15 Ω, R4 = 30 Ω and E = 10 V. Calculate the equivalent resistance of the circuit and the current in each resistor.
Asked by Topperlearning User | 27 Apr, 2015, 03:18: PM
Expert Answer
R3, R4, R2 : parallel
Upon calculation comes out to be
Rp= 6 Ω
R1 and Rp are in series.
Req = 6 +4 = 10Ω
Using Kirchoff's rules we get following equations,
E - I1R1-I2R2 =0
-R4I4+I2R2=0
-I3R3+I4R4 =0
E-I1R1-I3R3=0
-I3R3+I2R2 =0
I1 =I2+I3+I4
Solving the above equations we get
I1=1A
I2=10/25 A
I3= 10/25 A
I4 =5/25 A
Answered by | 27 Apr, 2015, 05:18: PM
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