Explain Ohm S Law

Here s an example of how to calculate voltage in a circuit with a lamp powered by the two aa cells.

Explain ohm s law. Ohm s law states that the voltage across a conductor is directly proportional to the current flowing through it provided all physical conditions and temperature remain constant. Ohm s law states that the current through a metallic element is proportional to the potential difference applied between its ends provided the temperature remains constant. The tool for measuring volts in an electric circuit is called a voltmeter. Or another funny way to explain ohm s law.

Resistance is measured in ohms. 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 directly proportional to the resistance of the circuit the formula for ohm s law is v ir this relationship between current voltage and relationship was discovered by german scientist georg simon ohm. In this formula v stands for voltage in volts i stands for current in amperes and r stands for resistance in ohms. What is the formula for ohm s law.

Ohm s law can be very difficult to understand by anyone who has never had any basic understanding or training in basic electricity. Basic ohm s law here we ll attempt to explain ohm s law basics. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. To help remember the formula it is possible to use a triangle with one side horizontal and the peak at the top like a pyramid.

Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in. A multimeter can measure several functions including voltage current resistance and temperature. Load analogy to understand the ohm s law. Ohm s law state that the current is directly proportional to the voltage across the conductor or resistor.

This is sometimes known as the ohm s law triangle. We ll explain it in terms of water flow. What is ohm s law. We ll assume that you have some knowledge of basic electricity.

This statement is also known as ohm s law statement. An ohmmeter is used for measuring resistance. V ir here v is the potential difference across 2 ends of a. The statement implies that the ratio of voltage and current is constant and is called resistance.

If the apply voltage across a circuit is 50v and a series connected resistor in the circuit which resistance is 10. V ir where v is the voltage across the conductor i is the current flowing through the conductor and r is the resistance provided by the conductor to the flow of. The ohm s law formula is like this. The concept behind ohm s law was first explained by german physicist georg ohm who the law is also named after.

Ohm s law expresses this relationship as a simple mathematical formula.