Question

A heater joined in parallel with a 60w bulb, is connected to the mains. If the 60w bulb is replaced by a 100 w bulb, will the rate of heat produced by the heater remains the same in comparison to the first case

Answer 1

if the heater joined in parallel with a 60w bulb is connected to the main .if the 60w bulb is replace by 100w bulb will the rate of heat produced by the heater remain the same in comparison to the first case no the heat of the bulb because the bulb is consuming more energy if the bulb is consuming more energy then it will produce more energy also

Answer 2

The rate of heat produced =Power

P=V2 / R

Here the appliance is same.So,the resistance will not change.

And as the appliances are connected in parallel.So the P.d will be same.

According to the formula, P depends on V2, and R .the rate of heat produced by the heater remain the same.