Algebra
posted by Julie .
The resistance in an electric circuit varies inversely with the current. If the resistance is 12 ohms when the current is 4 amps, what is the resistance when the current is 8 amps.?

R = kI, where k is a constant.
put in the given values
12 = k(4)
k = 3
Now you have your equation to answer the last part
Respond to this Question
Similar Questions

algebra
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 490 milliamperes when the resistance is 5 ohms,find the current when the resistance is 35 ohms. 
beginning algebra
In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms? 
Physics
In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms? 
Math
Amperes (abbreviated amp) measure the strength of electric current. An ohm is the unit of electrical resistance. In an electric circuit, the current varies inversely as the resistance. If the current is 24 amps when the resistance … 
Intermediate Algebra
The amount of current flowing into an electrical circuit varies inversely as the resistance in the circuit. When the resistance of a particular circuit is 5 ohms, the current is 42 amperes. what is the current when the resistance is … 
algebra
The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 50 amps when the resistances is 20 ohms. What is the current when the resistance is 60 ohms? 
Algebra
in an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 5A, the resistance is 20 ohms. What is the current when the resistance is 25 OHMs? 
nwfsc
In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 20 A (amperes), the resistance is 7 ohms. What is the resistance when the current is 14 A ? 
math
the current I in an electrical conductor varies inversely as the resistance R of the conductor . the current is 4 amps when the resistance is 280 ohms . what is the current when the resistance is 40 ohms ? 
college algebra
The current in a simple electrical circuit is inversely proportional to the resistance. If the current is 80 amps when the resistance is 30 ohms, find the current when the resistance is 12 ohms