Question

Calculate the energy consumed in electrical units when a 75 W fan is used for 8
hours daily for one month (30 days)​

Answer 1

AnswEr :

• Power = 75 W
• Time of using fan per day = 8 hours
• Fan in used for 30 days

We've to find value of electric energy :

$\longrightarrow \tt{Energy\ =\ Power\ \times\ Time} \\ \\ \\ \longrightarrow \tt{Energy\ =\ 75\ \times\ 8} \\ \\ \\ \longrightarrow \underline{\boxed{\frak{Energy\ =\ 600\ Wh}}}$

• Energy consumed by fan per day is 600 Wh

Now, we've to calculate energy consumed in 30 days.

$\longrightarrow \tt{Energy\ =\ 600\ \times\ 30} \\ \\ \\ \longrightarrow \tt{Energy\ =\ 18000\ Wh} \\ \\ \\ \longrightarrow \tt{Energy\ =\ \dfrac{18000}{1000}\ kWh} \\ \\ \\ \longrightarrow \underline{\boxed{\frak{Energy\ =\ 18\ kWh}}}$

• Energy consumed by fan in 30 days will be 18 kWh