Ohm’s Law Calculator
Instructions on How to Use the Calculator:
- Select Calculation Type:
- Choose whether you want to calculate Voltage (V), Current (I), or Resistance (R) from the dropdown menu.
- Enter Values:
- Based on your selection, input the required values:
- If calculating Voltage (V): Enter the Current (I) and Resistance (R).
- If calculating Current (I): Enter the Voltage (V) and Resistance (R).
- If calculating Resistance (R): Enter the Voltage (V) and Current (I).
- Based on your selection, input the required values:
- Calculate:
- Click the “Calculate” button to compute the missing value. The result and the formula used for the calculation will be displayed in the highlighted box.
- Reset:
- Click the “Reset” button to clear all input fields and the result. This allows you to perform new calculations without any previous data.
If you encounter any issues or have further questions, please consult additional resources or seek expert advice.
Ohms Law Formula
Ohm’s Law is a fundamental principle in electrical engineering that defines the relationship between voltage, current, and resistance in an electrical circuit. The formulas used in Ohm’s Law are as follows:
Voltage (V):
V = I×R
Where V is the voltage in volts (V), I is the current in amperes (A), and R is the resistance in ohms (Ω).
Current (I):
I = V
R
Where I is the current in amperes (A), V is the voltage in volts (V), and R is the resistance in ohms (Ω).
Resistance (R):
R = V
I
Where R is the resistance in ohms (Ω), V is the voltage in volts (V), and I is the current in amperes (A).
Explanation:
- Voltage (V) is the potential difference between two points in a circuit.
- Current (I) is the flow of electric charge through a conductor.
- Resistance (R) is the opposition to the flow of current in an electrical circuit.
These formulas allow you to calculate one of the values if the other two are known, making it a versatile tool for analyzing electrical circuits.
Example Calculations:
- Calculating Voltage (V):
If the current (I) is 2 amperes and the resistance (R) is 5 ohms:
V = I×R = 2A×5Ω = 10V
Calculating Current (I):
If the voltage (V) is 10 volts and the resistance (R) is 5 ohms:
I = V = 10V = 2A
R 5Ω
Calculating Resistance (R):
If the voltage (V) is 10 volts and the current (I) is 2 amperes:
R = V = 10V = 5A
I 2Ω
Practical Use:
These formulas are essential for designing and troubleshooting electrical circuits, allowing engineers and technicians to ensure that components operate within their specified ranges and to diagnose issues when they arise.