Physics I / Electric Charge and Coulomb's Law
Practice question · Match the pairs

Match each charge-related concept to its description.

  • Elementary charge e
  • Coulomb's constant k
  • Permittivity of free space ε0\varepsilon_{0}
  • Charge quantization
  • 8.99 × 10910^{9} N⋅m2/C2N\cdot m^{2}/C^{2}
  • 8.85 ×10\times 10⁻¹² C2C^{2}/(N⋅m2N\cdot m^{2})
  • 1.6 ×10\times 10⁻¹⁹ C
  • Charge comes in multiples of e
Hints
  1. Separate the universal constants from the principles they appear in.
  2. One idea says charge comes only in whole multiples of a basic unit.
Show the answer
  • Elementary charge e → 1.6 ×10\times 10⁻¹⁹ C
  • Coulomb's constant k → 8.99 × 10910^{9} N⋅m2/C2N\cdot m^{2}/C^{2}
  • Permittivity of free space ε0\varepsilon_{0} → 8.85 ×10\times 10⁻¹² C2C^{2}/(N⋅m2N\cdot m^{2})
  • Charge quantization → Charge comes in multiples of e
Why

These constants and principles underlie all of electrostatics.

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