Tim is using a cordless electric weed trimmer with a dc motor to cut the long weeds
Question:
(a) How much current flows through the motor when it is running smoothly?
(b) Suddenly the string of the trimmer gets wrapped around a pole in the ground and the motor quits spinning. What is the current through the motor when there is no back emf? What should Tim do?
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a When the motor is running smoothly the current and net emf ...View the full answer
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Related Book For 
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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