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a 100-w light bulb is left on for 10.0 hours. over this period of time, how much energy was used by the bulb?

Respuesta :

When a 100-w light bulb is left on for 10.0 hours. The  energy was used by the bulb is 1 kwhr.

Energy:

  • The ability to perform work is defined as energy.
  • It could exist in other forms as well, such as potential, kinetic, thermal, chemical, or nuclear.

Power:

  • Power is the amount of work completed in a given amount of time.
  • Watt is the SI unit of power (W)

thus, Enregy can be calculated as :

Energy = power × time

Power of a light bulb = 100 watt = 0.1 kw

Period of Time = 10hr

Energy consumed is  power × time

Energy = 0.1×10

Energy = 1 kwhr.

When a 100-w light bulb is left on for 10.0 hours. The  energy was used by the bulb is 1 kwhr.

To know more about power :

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