SOLUTION: If the voltage V in an electric circuit is held​ constant, the current I is inversely proportional to the resistance R. If the current is 40 amperes when the resistance is 2

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Question 1071870: If the voltage V in an electric circuit is held​ constant, the current I is inversely proportional to the resistance R. If the current is 40 amperes when the resistance is 216 ​ohms, find the current when the resistance is 120 ohms.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
I=k/R
find k first
40=k/216
k=8640
now use k
I=8640/120=72 amps.