1. What is Ohm's Law?

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

• \( I \) — Current in amperes (A)
• \( V \) — Voltage in volts (V)
• \( R \) — Resistance in ohms (Ω)

Explanation: The equation shows that current increases with higher voltage and decreases with higher resistance.

3. Importance of Current Calculation

Details: Calculating current is fundamental in circuit design, ensuring components receive appropriate current and preventing damage from excessive current.

4. Using the Calculator

Tips: Enter voltage in volts and resistance in ohms. Both values must be positive numbers. The result will be current in amperes.

5. Frequently Asked Questions (FAQ)

Q1: Can I use this for AC circuits?
A: This calculator is for DC circuits. For AC circuits with reactive components, you need to consider impedance (Z) instead of just resistance.

Q2: What are typical current values in household circuits?
A: Household circuits typically carry 15-20 amps, while small electronics might use milliamps (mA).

Q3: What happens if resistance is zero?
A: Zero resistance would theoretically result in infinite current (short circuit), which is why fuses and circuit breakers are important.

Q4: Does temperature affect the calculation?
A: Yes, resistance often changes with temperature, which would affect current. This calculator assumes constant resistance.

Q5: How accurate is this calculation?
A: It's mathematically exact for ideal resistors. Real-world components may have slight variations.