Heat And Power Developed In A Resistor - Practice Questions & MCQ

The ratio of thermal energy released in two resistors R and 3R connected in parallel in an electric circuit is :
 

A cell of emf 6V and internal resistance $1 \Omega$  is connected $2 \Omega$ across. The power dissipated in $2 \Omega$  in watts is 

A heater of 220 V heats a volume of water in 5 minute time. A heater of 110 V heats the same volume of water in

A 100 V, 40 watt bulb is connected across 220 V DC supply. The power consumption by bulb is:

In the circuit shown in the figure, the heat produced in 5 ohm resistance is 10 calories per second. The heat produced in 4 resistance is

In the circuit as shown in the figure, the heat produced by 6 ohm resistance due to current flowing in it is 60 calorie per second. The heat generated across 3 ohm resistance per second will be

A 100 V, the 40walt bulb is connected across a 220V 0c supply. The power consumed by the bulb is