Question

how does potential difference across resistance depend on current passing through it what is nature of v i graph obtained

Answer 1

potential difference across resistance is directly proportional to the current passing through it...
the v-i graph obtained will be straight line....

Answer 2

Answer:

the potential difference across a wire is akin to the pressure applied across a pipe containing water. The more the pressure the more the water that flows through the pipe. Similarly the more the potential difference the more the current through the wire and vice-versa. This is known as the Ohm's Law. The constant of proportionality is known as resistance of the wire.The V.I graph is a straight line passing through the origin and lying on the x-y plane