HotRod Using your math. The resistor is using 75 watts and pushing it thru a 50 watt resistor. We don't need the math here. We already know the resistance (thanks Jerry) All were really doing is to swap a 50 watt 1 ohm resister. With something that has a larger Wattage.
Here on Amazon is a 200 Watt 1 ohm resistor. Notice that it's rather large 1 1/2 times the width your hand. No problem were using it in a Truck.
https://www.amazon.com/uxcell-Gold-Aluminium-Resistor-Reisistance/dp/B0087YIKX0
