An electric motor draws a current of 2.60 A from a 18.0-V battery when it runs at normal speed. If the motor's armature is "jammed" so that it cannot rotate, the current suddenly rises to 10.0 A. What is the back emf of the motor when running at normal speed?
a. 4.68 V
b. 10.0 V
c. 22.7 V
d. 13.3 V
e. 133 V
d
Physics & Space Science
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Fill in the blank(s) with correct word
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