Q5 of 12 Page 37

The marking on an electrical appliance is 800 W, 200 V.

If it works on 100 V, what is the power consumed?

Given:

Power = 800W


Voltage = 200V


For the rating given above, we will find resistance of the electric appliance.


Formula used: Power,


⇒


Now, it will offer a resistance of 50 Ω


If it works on 100V, then power consumed, will be given as:


Power =


∴ it will consume 200 W of power, if it gets 100V.


More from this chapter

All 12 →
3

An electric heater of power 920 W is working on a 230 V supply. If current flows for 5 minutes through it, calculate the heat generated.

 4

How do discharge lamps produce light?

 5

The marking on an electrical appliance is 800 W, 200 V.

What is the power when it works on 50 V?

 5

The marking on an electrical appliance is 800 W, 200 V.

What happens if 500 V is applied to it?