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Question 987029: Electricity the table shows the relationship between resistance R and current I in a circuit
Resistance(ohms) 120 80 48 6 4
Current(amperes) 0.1 0.15 0.25 2 3
a. Is the relationship a function? Explain?
b. If the relation can be represented by the equation IR=12, rewrite the equation in function notation so that the resistance R is a function of the current I.
c. What is the resistance in a circuit when the current is 0.5 ampere?
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! Yes, it is a function.
Resistance is a function of amperes. For each amp, there is one and only one value for resistance.
It works the other way, too.
E=IR (well known relationship). If IR=12, R=12/I
R=E* (1/I)
When the current is 0.5 amp, R=12/0.5 - 24 ohms
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