miaboone8149 miaboone8149
  • 16-10-2018
  • Physics
contestada

A bulb in a circuit has a resistance of 3.5 ohms. The circuit has a voltage of 7 V. What is the power output of the bulb?

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Camel Camel
  • 16-10-2018

Power is voltage square divided by resistance.

P = U^2 / R

P = 7*7 / 3.5 = 49 / 3.5

P = 14 watts

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