Question

17. If a bulb of 60 W is lited for 4 hours every day for 30 days, then the energy
consumed is:
(a) 7.2 kwh
(b) 7200 kwh (C)720 kwh (d) 72 kwh
Meinl of​

Answer 1

$\Large\underline{\underline{\sf \green{Given}:}}$

• Power of bulb (P) = 60W

• Time (t) = 4hours for 30 days

$\Large\underline{\underline{\sf \green{To\:Find}:}}$

• Energy consumed = ?

$\Large\underline{\underline{\sf \green{Formula\: Used}:}}$

${\boxed{\boxed{\sf \red{Energy=Power×Time}}}}$

$\Large\underline{\underline{\sf \green{Solution}:}}$

$\implies{\sf E=60×4}$

$\implies{\sf E= 240\:Wh\:per\:day }$

For 30 days

$\implies{\sf 240×30 }$

$\implies{\sf 7200\:Wh\:per\:month }$

$\implies{\sf 7.2\:kWh}$

$\Large\underline{\underline{\sf \green{Answer}:}}$

Option (a) 7.2kWh

•°• Energy consumed is 7.2kWh