Ohm's Law with power calculator
Online calculator for formulas used in electronic circuit design and electrical engineering.Basic electric calculations:
Ohm's Law,
Ohm's Law with power,
DC power,
AC real power,
LC resonant frequency,
Capacitor charging/discharging,
Capacitive reactance,
Capacitive current + reactive power,
Capacitor energy,
Capacitor Δ energy,
RC discharging,
Inductor square pulse,
Inductive reactance,
Inductive current + reactive power,
Inductor energy,
2 parallel resistors,
3 parallel resistors
Wire and winding calculations:
Calculate Ohm's Law with power: 6Ω, 12V, A, W
This combines the Ohm's law and Power law, for example to calculate the power of a resistive load or power dissipation (loss) of a resistor. You can find the power loss and current of a resistor knowing its resistance and the voltage, or its power loss and voltage knowing its resistance and the current. You can also calculate the maximum current and maximum voltage of a resistor knowing its resistance and maximum power rating, or the resistance and power of a resistive load or resistor knowing the voltage and current, or the current and resistance of a resistive load knowing its rated voltage and power rating. Combines: V=R.I and P=V.I
Enter any 2 values, the other 2 will be calculated:
Standard EIA Decade Values of resistors - decade 1 to 10 Ω
| E6 | E12 | E24 |
|---|---|---|
| 1.0 Ω 1.5 Ω 2.2 Ω 3.3 Ω 4.7 Ω 6.8 Ω | 1.0 Ω, 1.2 Ω 1.5 Ω, 1.8 Ω 2.2 Ω, 2.7 Ω 3.3 Ω, 3.9 Ω 4.7 Ω, 5.6 Ω 6.8 Ω, 8.2 Ω | 1.0 Ω, 1.1 Ω, 1.2 Ω, 1.3 Ω 1.5 Ω, 1.6 Ω, 1.8 Ω, 2.0 Ω 2.2 Ω, 2.4 Ω, 2.7 Ω, 3.0 Ω 3.3 Ω, 3.6 Ω, 3.9 Ω, 4.3 Ω 4.7 Ω, 5.1 Ω, 5.6 Ω, 6.2 Ω 6.8 Ω, 7.5 Ω, 8.2 Ω, 9.1 Ω |
Other resistance decades:
100 - 1000 mΩ, 1 - 10 Ω, 10 - 100 Ω, 100 - 1000 Ω, 1 - 10 kΩ, 10 - 100 kΩ, 100 - 1000 kΩ, 1 - 10 MΩ, 10 - 100 MΩ, 100 - 1000 MΩ,Some common voltages:
| Alkaline Zinc-Carbon |
NiMH, NiCd rechargeable |
Li-Ion 3.6V |
Li-Ion 3.7V |
LiFePO4 (LFP) 3.2V |
Lead-acid battery |
Power supply |
Mains voltage |
|---|---|---|---|---|---|---|---|
|
1-cell: 1.5V 2-cell: 3V 3-cell: 4.5V 4-cell: 6V 5-cell: 7.5V 6-cell: 9V 7-cell: 10.5V 8-cell: 12V 9-cell: 13.5V 10-cell: 15V 11-cell: 16.5V 12-cell: 18V |
1-cell: 1.2V 2-cell: 2.4V 3-cell: 3.6V 4-cell: 4.8V 5-cell: 6V 6-cell: 7.2V 7-cell: 8.4V 8-cell: 9.6V 9-cell: 10.8V 10-cell: 12V 11-cell: 13.2V 12-cell: 14.4V |
1-cell: 3.6V 2-cell: 7.2V 3-cell: 10.8V 4-cell: 14.4V 5-cell: 18V 6-cell: 21.6V 7-cell: 25.2V 8-cell: 28.8V 9-cell: 32.4V 10-cell: 36V 11-cell: 39.6V 12-cell: 43.2V |
1-cell: 3.7V 2-cell: 7.4V 3-cell: 11.1V 4-cell: 14.8V 5-cell: 18.5V 6-cell: 22.2V 7-cell: 25.9V 8-cell: 29.6V 9-cell: 33.3V 10-cell: 37V 11-cell: 40.7V 12-cell: 44.4V |
1-cell: 3.2V 2-cell: 6.4V 3-cell: 9.6V 4-cell: 12.8V 5-cell: 16V 6-cell: 19.2V 7-cell: 22.4V 8-cell: 25.6V 9-cell: 28.8V 10-cell: 32V 11-cell: 35.2V 12-cell: 38.4V |
1-cell: 6V 2-cell: 12V 3-cell: 18V 4-cell: 24V 5-cell: 30V 6-cell: 36V 7-cell: 42V 8-cell: 48V 9-cell: 54V 10-cell: 60V 11-cell: 66V 12-cell: 72V |
1.8V 2.5V 3V 3.3V 5V 6V 9V 12V 15V 18V 24V 48V |
100V 110V 115V 120V 127V 208V 220V 230V 240V 380V 400V 415V |
Ohm's Law with power says:
•When 12V (twelve volts) voltage is applied to 6Ω (six ohms) resistance, the resulting current is 2A (two amps) and the power (or power dissipation) is 24W (twenty-four watts).•If a 2A (two amps) current is passed via 6Ω (six ohms) resistance, its voltage drop is 12V (twelve volts) and the power (or loss) is 24W (twenty-four watts).
•When a resistor passing 2A (two amps) drops 12V (twelve volts), its resistance is 6Ω (six ohms) and its power loss is 24W (twenty-four watts).
•If 12V (twelve volts) voltage applied to a resistor results in 2A (two amps) current, the resistance is 6Ω (six ohms) and the dissipation is 24W (twenty-four watts).
•When a resistive load draws 24W (twenty-four watts) at 12V (twelve volts), its current consumption is 2A (two amps) and its resistance is 6Ω (six ohms).
•A 6Ω (six ohms) resistor rated for 24W (twenty-four watts) maximum power dissipation has a maximum operating voltage of 12V (twelve volts) and its maximum current is 2A (two amps), otherwise its maximum power loss would be exceeded.
This is a simple online calculator for formulas used in electronic engineering and design.
This online calculator is for reference only. I do not guarantee it to work correctly. You use this at your own risk only.