A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor?
⢠Relationship between power (kW), voltage (V), and current (A) in DC circuits ⢠How to convert kilowatts to watts ⢠Checking if an answer is reasonable in size for the given power and voltage
⢠What is the basic formula that links power, voltage, and current in a DC circuit? Rearrange that formula to solve for current. ⢠First change 10 kW into watts, then plug into your formula with 125 V and solve for current. ⢠After you compute the current, which answer choice is closest to your calculated value?
⢠Be sure you converted kilowatts to watts correctly before calculating. ⢠Verify you used the correct formula for DC power, not AC three-phase power. ⢠Check that your final current value is not unrealistically small or huge for a 10 kW motor at 125 V.
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