contestada

(b) A teacher uses a 2200 W kettle to heat water.
The kettle is switched on for 2 minutes.
(i) Calculate the energy transferred by the kettle.

Respuesta :

nuhulawal20

The amount of energy transferred by the kettle in the given time is 264000J

Given the data in the question;

  • Power of electric kettle; [tex]P = 2200W[/tex]
  • Time elapsed; [tex]t = 2min = 120s[/tex]

Energy transferred by the kettle; [tex]E = \ ?[/tex]

Energy and Power

Electrical energy is energy gotten due to the movement of particles that are electrically charged .

Power is the quantity of energy transferred per unit time. It can be expressed as;

[tex]Power = \frac{Energy }{time}[/tex]

To determine the energy transferred by the kettle, we substitute our given values into the expression above.

[tex]Power = \frac{Energy}{time} \\\\2200W = \frac{E}{120s}\\ \\E = 2200W * 120s\\\\E = 264000J[/tex]

Therefore, the amount of energy transferred by the kettle in the given time is 264000J.

Learn more about energy: https://brainly.com/question/5144470

Otras preguntas