7 min read
This guide covers Coulomb's Law constant (k), its relationship to Coulomb's Law, and its role in simplifying electrostatic calculations. It also distinguishes between permittivity (ε) and permeability (μ), focusing on how permittivity measures a material's obstruction of electric fields. The guide introduces relative permittivity (εr) and the dielectric constant (κ), explaining their significance in comparing a material's electric storage capacity to a vacuum. Finally, it includes practice questions on these concepts.
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Question 1 of 12
What is the approximate value of Coulomb's Law constant (k)? 🧐
9 x 10^9 N⋅m²/C²
3 x 10^8 m/s
6.67 x 10⁻¹¹ N⋅m²/kg²
8.85 x 10⁻¹² C²/N⋅m²