SOLUTION: The electric current I, is amperes, in a circuit varies directly as the voltage V. When 18 volts are applied, the current is 3 amperes. What is the current when 30 volts are applie

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Question 1174348: The electric current I, is amperes, in a circuit varies directly as the voltage V. When 18 volts are applied, the current is 3 amperes. What is the current when 30 volts are applied?
Found 2 solutions by Boreal, Alan3354:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
V=kI
18=k*3
k=6 (which is the resistance, by the way)
30=6*I, so I=5 amps.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The electric current I, is amperes, in a circuit varies directly as the voltage V. When 18 volts are [sic] applied, the current is 3 amperes. What is the current when 30 volts are [sic] applied?
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3*(30/18) = 5 amps
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volts is singular.
18 volts is applied ...