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If a microwave is determined to use 661 W of power on a 120 V circuit, how many amperes does it need to run?

Sagot :

The formula for calculating power is expressed as

Power = current x voltage

Dividing both sides of the equation by voltage, we have

current = power/voltage

From the information given,

power = 661

voltage = 120

Thus,

current = 661/120

current = 5.51 A

It needs 5.51 amperes to run.