Question

Express Ohm's law both by a mathematical formula and by graph line

Answer 1

Ohm Law states that when current is passed between two points of a conductor, the current is directly proportional to the potential difference between the two points.

The mathematical formula for Ohm’s Law is V=RI,

where V stands for voltage,

I stands for current and

R represents resistance.

The graph line to represent Ohm Law will be a straight line with V on y-axis and I on x-axis.

Answer 2

Ohm's law states that the potential difference across the ends of a given metallic wire in a electric circuit is directly proportional to the current flowing through it ,provided it's temperature remains constant.

V is directly proportional to I

V=IR

Here V=potential difference

I=current

R=resistance

The VI graph is straight line passing through the origin.

And usually V is taken in x axis and I is taken in y axis.