Ohm S Law Chart

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

Ohm s law chart. Ohms law pie chart. V v i a r ω. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. Measured in watts is represented by the letter w.

Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in. The power p in watts w is equal to the voltage v in volts v times the current i in amps a. Simple to use ohm s law calculator. The chart below left shows the relationship between voltage current and resistance.

Basic electrical terms and defintions. Power is measured in watts and is defined as. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. 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.

When resistance decreases current increases. At a given voltage when resistance increases current decreases. Below are the formulas for these calculations. Calculate power current voltage or resistance.

Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. Ohm s law pie formula chart. Voltage current resistance and power can be calculated using ohm s law. The rate at which work is done when one ampere a of current flows through an electrical potential difference of one volt v.

Ohm s law can be used to validate the static values of circuit components current levels voltage supplies and voltage drops. Measured in ohms is represented by r or the greek letter ω power. The ohm law formulas above show the relationship between voltage amps watts and ohms. To help us understand the the relationship between the various values a little further we can take all of the ohm s law equations from above for finding voltage current resistance and of course power and condense them into a simple ohms law pie chart for use in ac and dc circuits and calculations as shown.