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6. State Ohm' law. Draw circuit diagram to verify it experimently. What is the shape of thegraph obtained by plotting potential difference applied across a conductor, along x-axis, andcurrent flowing through it, along y-axis. Draw the graph. What does the slope of a graph atany point represent?

Answer»

Ohm’s law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and inversely proportional to the resistance of the circuit. The formula for Ohm’s law isV=I/R. This relationship between current, voltage, and relationship was discovered by German scientist Georg Simon Ohm. Let us learn more about Ohms Law, Resistance, and its applications.

Ohm’s Law Definition

Most basic components of electricity are voltage, current, and resistance. Ohm’s law shows a simple relation between these three quantities.Ohm’s lawstates that the current through a conductor between two points is directlyproportional to the voltage across the two points.

Ohm’s Law Formula

Voltage= Current× ResistanceV= I×RV= voltage, I= current and R= resistance

The SI unit of resistance isohmsand is denoted byΩ

This law is one of the most basic laws of electricity. It helps to calculate the power, efficiency, current, voltage, and resistance of an element of an electrical circuit.

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Applications of Ohm’s Law

Ohm’s law helps us in determining either voltage, current or impedance or resistance of a linear electric circuit when the other two quantities are known to us. It also makes power calculation simpler.

the shape of the graph obtained by plotting current on the vertical axis and voltage on the horizontal axis is a straight line passing through the origin as shown in the following graph.Note: Slopeof the Graph with current on the vertical axis and voltage on the horizontal axis represents theResistanceof the material of the conductor.



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