Whats Ohms Law

Just enter 2 known values and the calculator will solve for the others.

Whats ohms law. The ohm s law equation is often explored in physics labs using a resistor a battery pack an ammeter and a voltmeter. Ohm s law can be used to validate the static values of circuit components current levels voltage supplies and voltage drops. 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. What is ohms law formula equation triangle ohm s law is one of the most fundamental of laws for electrical theory.

Ohm s law description of the relationship between current voltage and resistance the amount of steady current through a large number of materials is directly proportional to the potential difference or voltage across the materials thus if the voltage v in units of volts between two ends of a wire made from one of these materials is tripled the current i amperes also triples. Calculate power current voltage or resistance. Its resistance in a circuit. Ohm s law is the mathematical relationship between electric current resistance and voltage.

Simple to use ohm s law calculator. The formula for ohm s. If for example a test instrument detects a higher than normal current measurement it could mean that resistance has decreased or that voltage has increased causing a high voltage situation. An ammeter is a device used to measure the current at a given location.

In national 5 physics calculate the resistance for combinations of resistors in series and parallel. The principle is named after the german scientist georg simon ohm. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Use ohms law to relate resistance current and voltage.

A voltmeter is a device equipped with probes that can be touched to two locations on a circuit to determine the electric potential difference across those locations. Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. The ohms law formula or equation links voltage and current to the properties of the conductor i e.