Question

State Ohm’s Law. What is the relation between I,

Vand R? Draw the graph between V and I.​

Answer 1

Answer:

Ohm's law : The potential difference V across the ends of a given metallic wire in an electric circuit is directly proportional to the current flwoing through it, provided the temperature remains constant.

Derivation : Let I be the current flowing in the circuit and V be the potential difference.

By ohm's law:

V proportional I

V/I = constant

V/I = R

V = IR

Here R is a constant for the given metallic wire at a given temperature and is called resistance.

Answer 2

Ohm's law

The Ohm's law state that the current flowing through the wires of the circuit is directly proportional to the potential difference that is applied across the conductor.

I∝V

to remove this proportionality sign we have to add a constant that is Resistance of the conductor denoted by R

so, we get:

I = V/R

IR = V

as the voltage across the circuit increases then the current flowing through it also increases and vice versa.

For the graph of V vs I see the attached picture