CBSE Class 12 · 2003 · ElectrostaticsVery Short Answer

Write the S.I. unit of
(i) electric field intensity and
(ii) electric dipole moment.

Answer: (i) $N C^{- 1}$ (equivalently $V m^{- 1}$ );
(ii) coulomb-metre ( $C m$ ).

Solution

(i) Electric field intensity is force per unit charge, so its unit is

N C^{- 1}

, which is the same as

V m^{- 1}

. (ii) Dipole moment is charge times separation, so its unit is

C m

CBSE Class 12 Board · 2003 · Subjective

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