1. What is the Electric Force Equation?

The electric force equation F = qE describes the force experienced by a charged particle in an electric field. This fundamental equation in electromagnetism helps calculate the force acting on a charge due to an electric field.

2. How Does the Calculator Work?

The calculator uses the electric force equation:

Where:

• \( F \) — Electric force (Newtons)
• \( q \) — Electric charge (Coulombs)
• \( E \) — Electric field strength (Newtons per Coulomb)

Explanation: The equation shows that the force on a charged particle is directly proportional to both the charge magnitude and the electric field strength.

3. Importance of Electric Force Calculation

Details: Calculating electric force is essential for understanding electromagnetic interactions, designing electrical systems, and analyzing particle behavior in electric fields.

4. Using the Calculator

Tips: Enter charge in Coulombs and electric field strength in N/C. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the direction of the electric force?
A: The force direction depends on the charge sign. Positive charges experience force in the direction of the electric field, while negative charges experience force opposite to the field direction.

Q2: How does this relate to Coulomb's Law?
A: While F = qE calculates force from field, Coulomb's Law (F = kq₁q₂/r²) calculates force between two charges directly. The electric field E can be derived from Coulomb's Law.

Q3: What are typical values for charge and electric field?
A: Elementary charge is 1.6×10⁻¹⁹ C. Electric fields can range from few N/C (Earth's field) to millions of N/C (near charged objects).

Q4: Can this equation be used for point charges?
A: Yes, F = qE works for any charge in any electric field, whether the field is uniform or non-uniform.

Q5: What if the charge is negative?
A: The calculator uses magnitude only. For negative charges, the force magnitude remains the same but direction reverses.