# SOLUTION: An electric current (c) varies inversely as the resistance (r) of the circuit. c1= 6 amps, c2=? r1=115 ohms, r2=70 ohms. The missing proportion is?

Algebra ->  Algebra  -> Inverses -> SOLUTION: An electric current (c) varies inversely as the resistance (r) of the circuit. c1= 6 amps, c2=? r1=115 ohms, r2=70 ohms. The missing proportion is?      Log On

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 Question 180448: An electric current (c) varies inversely as the resistance (r) of the circuit. c1= 6 amps, c2=? r1=115 ohms, r2=70 ohms. The missing proportion is?Answer by Mathtut(3670)   (Show Source): You can put this solution on YOUR website!in an inverse relationship, when one variable increases the other decreases and vice versa. : cr=k......where k is a constant of the relationship : 6(115)=690 : now we can write a formula using the value of k we just found : cr=690 : we can manuiplute that formula to find the unknown variable. In this instance it is c2 : c=690/r : c=690/70 : 9.86 amps : Notice how r decreased from 115 to 70. therefore we would expect the current c to increase, and sure enough it went from 6 to 9.86