1. What is the Electric Charge Formula?

The electric charge formula (Q = I × t) calculates the amount of electric charge transferred when a constant current flows for a specific time period. It's a fundamental equation in electromagnetism and electrical engineering.

2. How Does the Calculator Work?

The calculator uses the electric charge formula:

Where:

• \( Q \) — Electric charge (coulombs)
• \( I \) — Electric current (amperes)
• \( t \) — Time (seconds)

Explanation: The formula states that the total charge transferred equals the current multiplied by the time during which the current flows.

3. Importance of Electric Charge Calculation

Details: Calculating electric charge is essential for designing electrical circuits, determining battery capacity, analyzing electrochemical processes, and understanding fundamental electromagnetic phenomena.

4. Using the Calculator

Tips: Enter current in amperes and time in seconds. Both values must be positive numbers. The result will be displayed in coulombs.

5. Frequently Asked Questions (FAQ)

Q1: What is a coulomb?
A: A coulomb is the SI unit of electric charge, equal to the charge transferred by a constant current of one ampere in one second.

Q2: Can this formula be used for alternating current?
A: This simple formula works for direct current (DC). For alternating current (AC), more complex calculations involving integration are needed.

Q3: How is this related to battery capacity?
A: Battery capacity is often measured in ampere-hours (Ah), which can be converted to coulombs (1 Ah = 3600 C).

Q4: What's the relationship between charge and electrons?
A: One electron has a charge of approximately 1.602 × 10⁻¹⁹ coulombs. The total charge equals the number of electrons multiplied by this elementary charge.

Q5: Are there limitations to this formula?
A: This formula assumes constant current. For varying current, the total charge is the integral of current with respect to time.