A 120 V power supply is used to power a TV. If the TV draws 0.25 A of current and the TV is used for 1.20 h, how much energy, in kilojoules, is used?

Respuesta :

The amount of energy used by the TV is 129.6 kJ.

What is electric energy?

Electric energy is the product of charge and potential difference.

To calculate the amount of electric energy used, we use the formula below.

Formula:

  • E = Vit................................. Equation 1

Where:

  • E = Electric energy
  • V = Voltage
  • i = Current
  • t = time

From the question,

Given:

  • V = 120 V
  • i = 0.25 A
  • t = 1.2 h = (1.2×3600) = 4320 s

Substitute these values into equation 1

  • E = 120×0.25×4320
  • E = 129600 J
  • E = 129.6 kJ

Hence, the amount of energy used by the TV is 129.6 kJ.

Learn more about electric energy here: https://brainly.com/question/13881533

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