The operating current, resistance, and voltages are related by:
Vs is the source voltage, Vb is the back voltage, and R is the resistance of the coil.
The motor in a toy car operates on 6.00 V, developing a 4.50 V back emf at normal speed. If it draws 3.00 A at a normal speed, what current does it draw when starting?
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Based on our data, we think this problem is relevant for Professor Jerousek's class at UCF.