An electric motor connected to a 120 V 60.0 Hz ac outlet does mechanical work at the

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An electric motor connected to a 120 V 60.0 Hz ac outlet does mechanical work at the rate of 0.100 hp (1 hp = 746 W).

(a) If the motor draws an rms current of 0.650A, what is its effective resistance, relative to power transfer?

(b) Is this the same as the resistance of the motor's coils, as measured with an ohmmeter with the motor disconnected from the outlet?

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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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Question Posted: Jan 24, 2011 05:31 AM

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An electric motor connected to a 120 V 60.0 Hz ac outlet does mechanical work at the

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a The effective resistance Reff satisfies Reff Puechanical or 1125 Reff ...View the full answer

Fundamentals of Physics

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