Asked by John
Just a quick one:
Is current (I) directly proportional to resistance (R) in a piece of resistance wire? Would the current - resistance graph be a straight line or a curve? Help greatly appreciated.
It would not be a straight line. For a fixed applied voltage V, current is
I = V/R
A graph of I vs R will be curved. It is called a hyperbola-shaped line
Thanks drwls :)
Is current (I) directly proportional to resistance (R) in a piece of resistance wire? Would the current - resistance graph be a straight line or a curve? Help greatly appreciated.
It would not be a straight line. For a fixed applied voltage V, current is
I = V/R
A graph of I vs R will be curved. It is called a hyperbola-shaped line
Thanks drwls :)
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