1. What is a Voltage Calculator by Power and Current?

Definition: This calculator determines the voltage in an electrical circuit based on the power and current values.

Purpose: It helps electricians, engineers, and students quickly calculate voltage when power and current are known.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Voltage (volts)
• \( P \) — Power (watts)
• \( I \) — Current (amps)

Explanation: The power is divided by the current to determine the voltage in the circuit.

3. Importance of Voltage Calculation

Details: Accurate voltage calculation is essential for circuit design, troubleshooting, and ensuring electrical components operate within their specified ranges.

4. Using the Calculator

Tips: Enter the power in watts and current in amps. Both values must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What units does this calculator use?
A: The calculator uses standard electrical units - watts for power, amps for current, and volts for voltage.

Q2: Can I use this for DC and AC circuits?
A: This formula works for DC circuits. For AC circuits, it calculates the magnitude of voltage but doesn't account for phase differences.

Q3: What if I get zero or negative values?
A: The calculator requires positive values for both power and current as negative values don't make physical sense in this context.

Q4: How precise are the results?
A: Results are displayed with 3 decimal places, but actual precision depends on your input values.

Q5: What happens if current is zero?
A: The calculator won't accept zero current as it would result in division by zero (undefined voltage).