Question

Two electric lamps of 40w and 200v rating are connected in parallel across the mains the net power consumed by them is

Answer 1

Here data is not clear as u didnt mention the voltage amd power of second bulb

I will tell u the method of solving this

Since lamps are connected in parallel

So net power will be the sum of power consumed by individual lamps

Another method

U will find individual resistance of each lamp then find effective resistance i.e. total resistance (R ) with it

(Total resistance in parallel is equal to sum of reciprocals of individual resistor)

We also know that potential difference is same in every part of circuit in parallel combination

Using P=V^2/R

U can find net power

Hope it will help u

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