1. What is Electric Charge?

Electric charge is a fundamental physical property of matter that causes it to experience a force when placed in an electromagnetic field. The SI unit of electric charge is the coulomb (C).

2. How Does the Calculator Work?

The calculator uses the electric charge formula:

Where:

• \( Q \) — Electric charge in coulombs (C)
• \( I \) — Electric current in amperes (A)
• \( t \) — Time in seconds (s)

Explanation: This formula calculates the total electric charge that flows through a point in an electrical circuit over a given time period.

3. Importance of Charge Calculation

Details: Calculating electric charge is essential in electrical engineering, electronics design, battery capacity determination, and understanding electrical circuits and systems.

4. Using the Calculator

Tips: Enter current in amperes (A) and time in seconds (s). Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between charge and current?
A: Current is the rate of flow of electric charge. One ampere equals one coulomb per second (1 A = 1 C/s).

Q2: What are typical charge values in everyday applications?
A: A smartphone battery might store 10,000-15,000 C, while a lightning bolt can transfer about 15 C of charge.

Q3: How is charge different from current?
A: Charge is the total quantity of electricity, while current is the rate at which charge flows. Charge is measured in coulombs, current in amperes.

Q4: Can this formula be used for alternating current?
A: For AC circuits, this formula applies to instantaneous values. For RMS values over time, integration is needed due to changing current direction.

Q5: What is the elementary charge unit?
A: The elementary charge is the charge of a single proton or electron, approximately 1.602 × 10⁻¹⁹ coulombs.