CBSE Class 12-science Answered
Pls solve it
Asked by Vijaybhan07 | 02 Oct, 2018, 04:41: PM
Expert Answer
The given circuit is redrawn in the figure shown in order to calculate the equivalent resistance.
Equivalent resistance can be worked out as (42/31)Ω.
total resistance in the circuit including internal resistance of battery = (42/31)+(2/3) ≈ 2Ω .
current in the circuit 
voltage drop across resistance network = current×Equivalent-Resistance = 0.9×(42/31) V
current through 3Ω resistance 
power disspated in circuit = i2 × R = 0.9×0.9×2 = 1.62 W
Answered by Thiyagarajan K | 02 Oct, 2018, 10:02: PM
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