Assertion: ballast resistor | /r/CapableOf | work other way
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Source sentences:
text: Yes, the starter draws a load of currant, so the voltage will drop during the starting phase, thats why we have the ballast resistor, but it works the other way around - The ballast resitor is CUT OUT when the starter cranks the motor, hence giving the coil full load of 12 volts (thereby actually "overloading" the coil, the coil is constructed for a continuous feed of 7-8 volts approximately).
text: It’s made that way to spread the resistance, and thus the heat, over a large area instead of being concentrated in one small “hot spot.