Question

State ohms law.derive relation between I,V,and R .draw graph between v and I.

Answer 1

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
The relationship between voltage, current, and resistance is described by Ohm's law. This equation, i = v/r, tells us that the current, i, flowing through a circuit is directly proportional to the voltage, v, and inversely proportional to the resistance, r. In other words, if we increase the voltage, then the current will increase. But, if we increase the resistance, then the current will decrease. We saw these concepts in action with the garden hose. Increasing the pressure caused the flow to increase, but getting a kink in the hose increased the resistance, which caused the flow to decrease.

Answer 2

Ohm's law gives a relationship between current and potential difference according to Ohm's law at constant temperature the current flowing through a conductor is directly proportional to the potential difference across its ends if I is the current flowing through a conductor and V is the potential difference of voltage across its and then according to Ohm's law:

I directly proportional to V

Or, V directly proportional to I

V= R × I

where is a constant called resistance of the conductor the value of gas constant depends on the nature length area of cross section and temperature of the conductor.

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