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
= 30 wattR = 10 Ω
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
The charge flowing through a resistance R varies with time as Q = 2t - 8t2. The total heat produced in the resistance is...Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the...A potentiometer is connected between A and B and the balance point is obtained at 203, 6cm When the end of the potentiom...A wire of radius r has resistance R. If it is stretched to a radius , its resistance will be :...Two stones are thrown up simultaneously from the edge of a cliff 240 m high with initial speed of 10 m/s and 40 m/s resp...