The amount of electrical current that flows through a wire is inversely proportional to the ...
The amount of electrical current that flows through a wire is inversely proportional to the resistance in that wire. A wire originally carries 4 amperes of electrical current. Then the resistance is reduced to one-fifth of its original value. How many amperes of electrical current will flow through the wire?
Answer/Solution
20
Steps/Work
Given that, I∝1/R, I*R is a constant value.
I1*R1 = I2*R2
I1*R1 = I2*R1/5
I2 = 5*I1 = 20 amperes
The answer is D.
I1*R1 = I2*R2
I1*R1 = I2*R1/5
I2 = 5*I1 = 20 amperes
The answer is D.