Question

If I varies inversely with R and I = 0.25 when R = 18, which equation should be used to show this relationship?

Answer 1

`I=9/(2*R)`

Explanation:

We can construct our equation like
`I=k/R`

given that I=0.25 when R=18,

`0.25 = k/18`

`k=18*0.25 = 4.5 = 9/2`

final equation is:

`I=9/(2*R)`