Note:
This formula calculates the Current (I) flowing through an electrical circuit based on
the applied Voltage (V) and the Resistance (Ω) of the circuit.
Ohm's Law is one of the fundamental principles in electrical engineering and physics. It describes
the relationship between voltage, current, and resistance, ensuring the safe and efficient operation
of electrical systems.
Understanding Parameters:
- Voltage (V): The potential difference that drives electric charge through a conductor.
- Resistance (Ω): The opposition a material offers to the flow of electric current.
- Current (A): The flow of electric charge through the circuit, calculated using the formula:
I (A) = V (V) / R (Ω).
Key Applications:
- Electrical Circuit Analysis: Helps in designing and troubleshooting electrical circuits.
- Power Consumption Estimation: Used to determine power usage in electrical appliances.
- Safety & Overload Protection: Ensures that circuits operate within safe current limits
to prevent overheating and damage.
Validations & Input Constraints:
- Resistance must be positive:
- Resistance (Ω) > 0 is required because division by zero is undefined.
- If Resistance ≤ 0, an error message will be displayed:
"Invalid input! Resistance must be a positive number."
- Current can be positive or negative:
- A negative result indicates that the direction of current is opposite to the assumed direction.
- No Zero or Negative Resistance Allowed:
- Zero resistance would cause infinite current, which is physically impossible in real-world circuits.
Conclusion:
This tool helps users accurately calculate current based on Ohm’s Law while ensuring
valid input values. Proper validation prevents incorrect calculations and improves the
reliability of electrical circuit analysis.