☑ Calculate Power Dissipation In Resistor

Any resistor in a circuit that has a voltage drop across it dissipates electrical power. P v i v i r ohms law combining these gives p i i r or p i 2 r.

Resistor Power Rating And The Power Of Resistors

Power Dissipation

Ac Circuits

The calculator computes the dc heat dissipation in a resistor based on its value and either the voltage across it or the current through it.

Calculate power dissipation in resistor. V p i i p v combining this equation with ohms law gives the power dissipated in a resistor. The current through the resistor is i 90 ma. Assuming a battery with 6000 volts and a resistor of exactly 330 w the power dissipation will be 01090909 watts or 1090909 milli watts mw to use a metric prefix.

Then we can use the power rule p i v to find the power dissipated by the resistor. This is the maximum power that can be dissipated from the resistor without it burning out. P v i where p is power in watts v is voltage in volts and i is current in amps this can be re arranged to give.

Fill in any two inputs and one output will display the result. The resistance value of wirewound resistors is very low low ohmic values compared to the carbon or metal film types. Therefore the power dissipated in the resistor is.

Fill in any two inputs and one output will display the result. This electrical power is converted into heat energy hence all resistors have a power rating. Any way you calculate it the power dissipation figure should be roughly the same.

The resistive range of a power resistor ranges from less than 1w r005 up to only 100kw as larger resistance values would require fine gauge wire that would easily fail. The rate of conversion is the power of dissipation. The voltage across the resistor is v 9 v.

This calc gives the power dissipation in an electrical system from any two of the resistance voltage and current. References 1 work voltage and power. The formula for calculating power in dc circuits is.