How To Calculate Resistance From Voltage And Current

Just like voltage resistance is a quantity relative between two points.

How to calculate resistance from voltage and current. Ohm s law can be rewritten in three ways for calculating current resistance and voltage. V v i a r ω. Ohm s law calculator online. First version of the voltage formula.

The team of a calculator online provided a simple and efficient tool known as ohms law calculator through which you can readily find out the value of voltage v current i power p and resistance r concerning simple ohm s law formula. If a current i should flow through a resistor r the voltage v can be calculated. Explanation of the equations and calculation. I can be calculated.

Once you have the current calculate voltage for the individual resistors by multiplying the current by the resistance. To calculate total resistance in series circuits look for a single loop with no branching paths. For this reason the quantities of voltage and resistance are often stated as being between or across two points in a circuit. Calculate the voltage v current i resistance r or power p given two known quantities for the electrical current.

The power p in watts w is equal to the voltage v in volts v times the current i in amps a. If you don t know the individual values use the ohm s law equation where resistance voltage divided by current. Resistance 240 3 80 ω to calculate the resistance of an electrical component an ammeter is used to measure the current and a voltmeter to measure the potential difference. If there is a voltage v across a resistor r a current i flows through it.

If two values are known from these three values another one can be found using our vape coil calculator for example if the voltage and current are known you can find the resistance or if resistance and voltage are known current can be calculated by entering the other two values in the resistance calculator. V i r. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. For example in a series circuit with 3 resistors of 2 3 and 5 ohms and a voltage of 12 volts the current would be 12 divided by 10 or 1 2 amperes.

Power voltage current resistance p v i r calculator. For the 2 ohm resistor the voltage would be 1 2 times 2 or 2 4 volts. The amount of current in a circuit depends on the amount of voltage and the amount of resistance in the circuit to oppose current flow. Free ohm s calculator for electricity.

Ohm s law formulas and ohm s law formula wheel. This calculator is based on simple ohm s law as we have already shared ohm s law p i v r calculator in which you can also calculate three phase current.