1.The exciting current of an electromagnet is rated at 12 Amperes. When connected across a 122-Volt source, the current is 14 Amperes. Determine the ohms in a resistor which must be connected in series to limit the current to (a) rated value, and (b) 9 amperes.

1.The exciting current of an electromagnet is rated at 12 Amperes. When connected across a 122-Volt source, the current is 14 Amperes. Determine the ohms in a resistor which must be connected in series to limit the current to (a) rated value, and (b) 9 amperes.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 2RQ: What is the advantage of alternating current over direct current?

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