Current Electricity and Electrical InstrumentHard
Question
Three 60W, 120W light bulbs are connected across a 120 V power source. If resistance of each bulb does not change with current then find out total power delivered to the three bulbs.
Options
A.180 W
B.20 W
C.40 W
D. 60 W
Solution
R Here R = 
, Total power supplied =
× 60 = 40 WCreate 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
A moving coil galvanometer is converted into an ammeter reads upto 0.03 A by connecting a shut of resistance 4r across i...A D.C. supply of 120 V is connected to a large resistance X. A voltmeter of resistance 10kΩ placed in series in the...For two wires A and B of same material and of same mass, the radius of A is double that of B. If the resistance of wire ...In the circuit diagram each resistor of resistance 5Ω. The points A and B are connected to the terminals of a cell ...Resistance of an ideal voltmeter is :...