The power (P) required to run a motor is equal to the voltage (E) applied to that motor times the current (I) supplied to the motor. If the motor data says the motor uses 180 watts of power and the voltage applied to the motor is 120 volts, how much current will the motor require?

Question

Fernando Crane

Physics

17 July, 23:19

The power (P) required to run a motor is equal to the voltage (E) applied to that motor times the current (I) supplied to the motor. If the motor data says the motor uses 180 watts of power and the voltage applied to the motor is 120 volts, how much current will the motor require?

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Answers (1)

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Graham Rich · Answer 1

It is known that power of a machine is related to the voltage and current as power equals voltage times current.

Mathematically, Power = Voltage * Current

Since, it is given that power is 180 watts and voltage is 120 volts. Therefore, calculate the current required by motor as follows.

Power = Voltage * Current

180 watts = 120 volts * Current

Current = 1.5 ampere

Thus, we can conclude that current required by the motor is 1.5 ampere.