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Voltage Formula:
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The voltage formula V = Q/C calculates the voltage across a capacitor based on the charge stored and the capacitance. This fundamental relationship is derived from the definition of capacitance in electrical circuits.
The calculator uses the voltage formula:
Where:
Explanation: The formula shows the direct relationship between charge and voltage, and the inverse relationship between capacitance and voltage for a given charge.
Details: Accurate voltage calculation is crucial for designing and analyzing electrical circuits, determining capacitor specifications, and ensuring proper circuit operation in various electronic applications.
Tips: Enter charge in coulombs and capacitance in farads. All values must be valid positive numbers (charge > 0, capacitance > 0).
Q1: What is the relationship between charge and voltage?
A: Voltage is directly proportional to charge when capacitance is constant (V ∝ Q), meaning more charge results in higher voltage.
Q2: How does capacitance affect voltage?
A: Voltage is inversely proportional to capacitance when charge is constant (V ∝ 1/C), meaning larger capacitance results in lower voltage for the same charge.
Q3: What are typical units used in this calculation?
A: Charge is measured in coulombs (C), capacitance in farads (F), and voltage in volts (V). Microfarads (μF) and picofarads (pF) are commonly used for smaller capacitances.
Q4: Can this formula be used for all capacitors?
A: This formula applies to ideal capacitors. Real capacitors may have additional factors like equivalent series resistance (ESR) and leakage current that affect performance.
Q5: How is this formula applied in circuit design?
A: Engineers use this formula to determine appropriate capacitor values for filtering, energy storage, timing circuits, and voltage regulation applications.