Coulomb's Law
Calculate the electrostatic force between two point charges
Interactive Sandbox
Adjust values in real-time and observe mathematical cause-and-effect
Direct computational model evaluating Coulomb's Law.
Variable Mechanics
Roles, constraints & impacts
Charge 1
Charge 1
Charge 2
Charge 2
Distance
Distance
At a Glance
Gotchas, units & real-world use
Formula Nature & Mechanics
Direct computational model evaluating Coulomb's Law.
Common Mistakes & Traps
- Ensure all input measurements share consistent units before calculating.
- Check for denominator values approaching zero to prevent undefined division.
- Follow standard order of operations (PEMDAS: Parentheses, Exponents, Multiply/Divide, Add/Subtract).
Dimensional Analysis & Units
Direct evaluation matching formula variable dimensions.
Real-World & Industry Application
Widely utilized across modern physics applications, academic analysis, and engineering estimations.
Worked Example: Coulomb's Law
Given:
- q1 = 2
- q2 = 3
- r = 0.5
- F = k·q₁q₂ / r²
- F = 8.99e9 × (2e-6 × 3e-6) / 0.25
- F = 0.05394 / 0.25
- F = 0.2158 N
Answer: 0.2158
Frequently Asked Questions
What is the Coulomb's Law formula?
F = k·q₁q₂ / r² (k = 8.99 × 10⁹). Calculate the electrostatic force between two point charges.
How do I calculate Coulomb's Law?
Enter Charge 1 (q1), Charge 2 (q2), Distance (r) into the calculator. It applies F = k·q₁q₂ / r² (k = 8.99 × 10⁹) and shows every step of the working.
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