Ad Space (320x50)

Voltage Calculator

A
ฮฉ

Voltage (V = I ร— R)

50 V

Power

25 W

Current

0.5 A

Ad Space (300x250)

How to Use the Voltage Calculator

  1. Choose Ohm's Law or Voltage Divider mode
  2. Enter the required values
  3. View calculated voltage and related values

Common Applications

  • Voltage Drop - Calculate losses in wires and components
  • Voltage Dividers - Create reference voltages for sensors
  • Power Supplies - Design voltage regulation circuits
  • LED Circuits - Determine voltage across components
Ad Space (300x250)

Frequently Asked Questions

How do I calculate voltage drop?

Voltage drop = Current ร— Resistance (V = I ร— R). It's the voltage lost across a component or wire.

What is a voltage divider?

A voltage divider uses two resistors to reduce voltage. Vout = Vin ร— (R2 / (R1 + R2)).

Why is voltage drop important?

Excessive voltage drop wastes energy and can cause equipment malfunction. Keep it under 3-5% for long wire runs.

How do I calculate wire voltage drop?

Use V = 2 ร— I ร— R ร— L, where L is wire length. The factor of 2 accounts for round-trip current flow.

Related Tools