Question

It takes 3 minutes to make toast in a 1500 watt toaster. Calculate how much work is done by the toaster.

Answer 1

Hello there.

It takes 3 minutes to make toast in a 1500 watt toaster. Calculate how much work is done by the toaster. 

270,000 J

Answer 2

Answer: The work done by the toaster is 270,000 J

Explanation:

Power is defined as the ratio of rate of work done by an object with respect to time.

Mathematically,

$P=\frac{W}{t}$

where,

P = power of the toaster = 1500 W

W = work done by the toaster = ?

t = time taken = 3 mins = 180 sec   (Conversion factor:  1 min = 60 sec)

Putting values in above equation, we get:

$1500W=\frac{W}{180s}\\\\W=(1500W\times 180s)=270,000J$

Hence, the work done by the toaster is 270,000 J