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Network Elements and the Concept of Circuit

Direction: Figure given below shows four light bulbs connected across an 85V battery. The bulbs are said to be connected in parallel.

  1. The total power consumed in the circuit shown in the figure is—


    1. 10 W
    2. 12 W
    3. 16 W
    4. 20 W
Correct Option: B

The given circuit

Case 1: When current source is taken

IAB = 2A & IBC = OA (Due to S.C. of voltage source)
Case 2: When voltage source is taken

IBC =
2
= 1 A
2

IBA = OA

So, the power consumed in the circuit
P = I2AB × 2Ω + = I2BC × 2Ω
= 22 × 2 + 12 × 2 = 10W



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