# What is inversly proportional and proportional

2

2014-08-26T08:05:29+05:30
When we say that X is proportional to Y
it means that as the value of Y will increase/decrease, the value of X will also increase/decrease.
e.g. X=RY, where R is any fixed
While when we say that X is inversely proportional to Y,
it means that as the value of Y will increase/decrease, the value of X will also decrease/increase
e.g. XY=R.

2014-08-26T17:02:40+05:30

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The formula for current through a conductor with resistance R when the voltage difference between the ends of conductor is V :

I is DIRECTLY proportional to V.  If V increases, I increases. If V decreases then I decreases.
I is INVERSELY proportional to R. IF R increases then I decreases and if R decreases then I increases.