alleryStart learning →The SI unit of electric field intensity is
A$N\,C$
B$C\,N^{-1}$
C$N\,m^{-1}$
D$N\,C^{-1}$
Answer & Solution
Correct answer: D. $N\,C^{-1}$
1. Electric field is force per unit positive charge, $\vec{E} = \vec{F}/q$.
2. Its unit is therefore newton per coulomb, $N\,C^{-1}$ (equivalently $V\,m^{-1}$).
3. The other options are not equivalent to force/charge.
_Source: Samacheer Kalvi Class 12 Physics Vol.1, Unit 1 'Electrostatics', §1.3.1_
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