Question

Calculate the electrical energy consumed by a 1200 W toaster in 30minutes

Answer 1

Answer:-

E = 216 kJ.

Given :-

P = 1200 w

T = 30 minutes

= 30 × 60

= 1800 s

To find :-

The electrical energy consumed by the toaster.

Solution:-

Let the electrical energy consumed by toaster be E.

Power :- The rate of electrical energy dissipated by an appliances is know as its power.

From definition,

★$\huge \boxed{P = \dfrac{E}{T}}$

Now, put the given value

→$1200 = \dfrac{E}{1800}$

→$E = 1200 \times 1800$

→$E = 2,16,0000 J$

→$E = \dfrac{2,16,000}{1000}$

→$E = 216 kJ$

hence,

The electrical energy consumed by toaster is 216 kJ.