Current Electricity and Electrical InstrumentHard

Question

The power dissipated in the circuit shown in the figure is 30 Watts. The value of R is
             

Options

A.30 Ω
B.20 Ω
C.15 Ω
D.10 Ω

Solution

Total power dissipated is = 30 watt
R = 10 Ω

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