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Electric Charges and Fields — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectric Charges and Fields1 Mark
MCQ
Coulomb's Law is true for:
  • A
    Atomic distances (=10-11m)
  • B
    Nuclear distances (=10-15m)
  • C
    Charged as well as uncharged particles
  • D
    All the distances
✓

Answer

  1. All the distances

Explanation:

Coulomb's law is true for all distances whether it is small and large. Hence it is called a long range force.

Coulomb's force $\text{F}=\frac{\text{q}_1\text{q}_2}{4\pi\in_\circ\text{r}^2}$

$\Rightarrow\text{F}\propto\frac{1}{\text{r}^2}$

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