Question

Is it possible to find the electrical energy in terms of kJ if the power consumed by a toaster in 15 min is 125 W?

• A. 112.5 kJ
• B. 112.05 kJ
• C. 11.25 kJ
• D. 1125 kJ

Answer 1

The correct option is A

112.5 kJ

Yes, it is possible to calculate the energy in terms of kJ in the following way,

For, t = 15 min = 15 $\times$ 60 = 900 s, P = 125 W

H = P $\times$ t = 125 $\times$ 900 = 112500 J

Since, 1 kJ = 1000 J, so 112500 J is,

$\frac{112500}{1000}$ = 112.5 kJ (Answer)