Question

what do you understand by the statement," a fan works on 100 W power?​

Answer 1

Answer:

Explanation:

A fan needs a power of 100watts to work properly

Answer 2

A fan works on 100 Watt of power means in a time of 1 second, then fan does 100 Joules of work.

As we know, Power is the rate of doing work, so we can easily obtain its mathematical expression and as a result we can say that :

Power = Work done/Time taken.

Now, if 100 Joules of work is done at a time of 1 Second, we will say that the fan has 100 Watt of power.

In terms of electricity, you will learn the below stated things in $\bold{higher\:classes}$.

Electric power (P) = W/t = VIt/t = VI

Also, from Ohm's law, I = V/R, (I is electric current, V is potential difference and R is resistance)

Hence, P = V²/R = I²R.

From the study of electric power, some excellent facts you have to keep in your mind, if by chance required somewhere :

(1) 1 kW = 10³ W

(2) 1 MW = ${10}^{6} W$

(3) 1 GW = ${10}^{9} W$

Here, whatever you can say be explained as the following results :

➡ W means "WATT".

➡ kW means "KILO-WATT".

➡ MW means "MEGAWATT".

➡ GW means "GIGAWATT".