Earth Bondhon
Creators
Rojony Khatun Author
Rojony Khatun
CalculatorToolsProjectExpert
Reviewers
Małgorzata Koperska, MD Steven Wooding
Last updated: October 1, 2025

Applied Voltage Calculator | Circuit Voltage Tool

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Applied Voltage Calculator

Calculate applied voltage in AC/DC circuits easily using formulas. Quick tool with tables, formulas, and examples for engineers and students.

applied potential difference calculator

In DC circuits, Ohm's Law (V = I × R) can be used to determine applied voltage and impedance in AC circuits (V = I × Z).

Formula & Table Summary:

FormulaDescription
V = I × RApplied voltage in DC
V = I × ZApplied voltage in AC

applied voltage calculator

The Applied Voltage Calculator is useful in determining the actual voltage that is applied in a circuit. Use V = I × R for DC or V = I × Z for AC. Convenient in designing and troubleshooting.

supply applied voltage

Current (A)Resistance (Ω)Impedance (Ω)Applied Voltage (V)
210-20
412-48
3-824
5-1575

Frequently Asked Questions - Applied Voltage Calculator:

What is applied voltage?

Applied voltage is the voltage supplied to a circuit or component by a source.

How do you calculate applied voltage in DC?

Use V = I × R, where I is current and R is resistance.

How do you calculate applied voltage in AC?

Use V = I × Z, where Z is impedance.

Is applied voltage the same as source voltage?

Yes, in ideal conditions, but real systems may include drops or losses.

What is the unit of applied voltage?

Applied voltage is measured in volts (V).

Why is applied voltage important?

It determines how much electrical energy is delivered to a circuit or device.

How can I measure applied voltage?

Use a voltmeter across the circuit input terminals.

Can applied voltage be higher than rated voltage?

Yes, but it may damage equipment if it exceeds safe limits.

What happens if applied voltage is too low?

The circuit may not work correctly, and devices may underperform.

Is applied voltage affected by load?

Yes, in real systems load can cause drops, making applied voltage lower than source voltage.

Rojony Khatun

Rojony Khatun

CalculatorToolsProject

Rojony Khatun is the creator of a free online tools website designed to simplify everyday and engineering-related calculations for students, professionals, and hobbyists. The platform offers a wide variety of basic and advanced calculators across key categories, including Electrical Calculators, Electronic Calculators, and Time & Date Calculators, helping users solve problems quickly and accurately.