1. What is a Voltage Across a Capacitor Calculator?

Definition: This calculator determines the voltage across a capacitor based on the stored charge and capacitance.

Purpose: It helps electronics engineers, students, and hobbyists analyze and design circuits involving capacitors.

2. How Does the Calculator Work?

The calculator uses the fundamental capacitor formula:

Where:

• \( V \) — Voltage across the capacitor (volts)
• \( Q \) — Charge stored in the capacitor (coulombs)
• \( C \) — Capacitance (farads)

Explanation: The voltage across a capacitor is directly proportional to the stored charge and inversely proportional to its capacitance.

3. Importance of Capacitor Voltage Calculation

Details: Understanding capacitor voltage is crucial for circuit design, energy storage calculations, and ensuring components operate within their rated limits.

4. Using the Calculator

Tips: Enter the charge in coulombs and capacitance in farads. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for the inputs?
A: Use coulombs for charge and farads for capacitance. For microfarads (μF), divide by 1,000,000 to convert to farads.

Q2: Does this formula work for all capacitor types?
A: Yes, this fundamental relationship applies to all capacitors regardless of their construction.

Q3: What if my capacitor has a voltage rating?
A: Ensure the calculated voltage doesn't exceed the capacitor's rated voltage to prevent damage.

Q4: How do I measure charge (Q) in practice?
A: Charge is often calculated using Q = CV, or measured with specialized instruments like coulomb meters.

Q5: What's the relationship with capacitor energy?
A: Energy stored in a capacitor is given by E = ½CV², which can be derived from this fundamental relationship.