Question

Two 100 watt 200 volt lamp are connected in series across a 200 volt supply the total power consumed by each lamp

Answer 1

Answer:

Step-by-step explanation:

Power depends on three factors :

Voltage

Current

Resistance

Of these three, the first two are liable to change according to a given circuit, but the resistance of a device is fairly constant.

Let's take a 200 volts - 100 watts bulb and calculate the resistance of its filament :

We know,

P=V2RP=V2R

or

R=V2PR=V2P

When V=200 volts and P = 100 watts,

R = (200*200)/100 = 400 ohms.