1. What is Electron Charge?

The elementary charge (e) is the electric charge carried by a single proton or electron. It's a fundamental physical constant approximately equal to 1.602 × 10⁻¹⁹ coulombs. The total charge (Q) of a system can be calculated by multiplying the number of charged particles (n) by the elementary charge.

2. How Does the Calculator Work?

The calculator uses the electron charge equation:

Where:

• \( Q \) — Total electric charge (Coulombs)
• \( n \) — Number of electrons (or protons)
• \( e \) — Elementary charge (1.602176634 × 10⁻¹⁹ C)

Explanation: This equation calculates the total charge by multiplying the number of charged particles by the charge of each particle.

3. Importance of Charge Calculation

Details: Calculating electric charge is fundamental in electromagnetism, electronics, and quantum physics. It's essential for understanding electric fields, currents, and many phenomena in modern physics.

4. Using the Calculator

Tips: Enter the number of electrons (or protons) and the elementary charge value. The default value for elementary charge is the CODATA recommended value of 1.602176634 × 10⁻¹⁹ C.

5. Frequently Asked Questions (FAQ)

Q1: What is the exact value of elementary charge?
A: As of the 2019 SI redefinition, the elementary charge is exactly 1.602176634 × 10⁻¹⁹ coulombs.

Q2: How is this different from Coulomb's Law?
A: Coulomb's Law (F = k·q₁·q₂/r²) calculates the force between charges, while this equation calculates the total charge from the number of particles.

Q3: Can I use this for positive charges?
A: Yes, just remember protons have positive charge (+e) while electrons have negative charge (-e).

Q4: Why is the elementary charge important?
A: It's one of the fundamental constants of nature and defines the quantum of electric charge.

Q5: How precise is this calculation?
A: The precision depends on your input values. The elementary charge is now a defined exact value in the SI system.