The current in a simple electrical circuit is inversely proportional to the resistance. The current is 80 amps when the resistan
ce is 50 ohms. What is the current when the resistance is 40 ohms?
1 answer:
I = / r where I = current and r = resistance
80 = k / 50 so
k = 400
so we have I = 400/r
when r = 40
I = 400/40 = 10 amps
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