MCQ
What are the units of $K=\frac{1}{4 \pi \varepsilon_0}$ ?
- AUnitless
- B$Nm ^2 C ^{-2}$
- C$C^2 N^{-1} m^{-2}$
- D$Nm ^2 C ^2$
✓
Answer
C. $C^2 N^{-1} m^{-2}$
Explanation :
$
\left[\frac{1}{4 \pi \varepsilon_0}\right]=\left[\frac{q^2}{F r^2}\right]=\left[\frac{\text { Coulomb }^2}{N \times m^2}\right]=\left[C^2 N^{-1} m^{-2}\right] .
$
Explanation :
$
\left[\frac{1}{4 \pi \varepsilon_0}\right]=\left[\frac{q^2}{F r^2}\right]=\left[\frac{\text { Coulomb }^2}{N \times m^2}\right]=\left[C^2 N^{-1} m^{-2}\right] .
$
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