Energy Charge Voltage Calculator

The Energy Charge Voltage Calculator helps you determine the voltage across a capacitor based on how much energy it stores, how long it charges, or how much charge it carries. This tool proves useful in electrical engineering, circuit design, and educational contexts. You can use it to verify circuit performance, size components, and ensure safety in high-voltage applications.

This calculator belongs to the Electronics and Energy Storage Calculators category. It provides a fast and clear way to compute the voltage needed or developed across a capacitor.

Formula of Energy Charge Voltage Calculator

You can calculate voltage using one of the following methods depending on the known values:

1. Energy Stored in a Capacitor

Use this when energy and capacitance are known.

V = √(2 × E / C)

• E = Energy stored (in joules)
• C = Capacitance (in farads)
• V = Voltage (in volts)

2. If Power and Charge Time Are Known

Use this when power consumption and time are available.

V = √(2 × P × t / C)

• P = Power (in watts)
• t = Time (in seconds)
• C = Capacitance (in farads)

3. If Charge and Capacitance Are Known

Use this formula when charge is given.

V = Q / C

• Q = Electric charge (in coulombs)
• C = Capacitance (in farads)

Reference Table for Quick Use

This table assumes the same energy-to-capacitance ratio, highlighting the square root relationship between energy and voltage.

Example of Energy Charge Voltage Calculator

Suppose a capacitor stores 5 joules of energy and has a capacitance of 0.05 farads. What is the voltage?

V = √(2 × 5 / 0.05)
V = √(200) ≈ 14.14 volts

So, the capacitor charges up to approximately 14.14 volts.

Most Common FAQs