Q.

The unit of permittivity of free space, ε0, is

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a

coulomb/newton-metre

b

newton-metre2/coulomb2

c

coulomb2/newton-metre2

d

coulomb2/(newton-metre)2

answer is C.

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Detailed Solution

Force between two chargesF=14πε0q2r2⇒ε0=14πq2Fr2=C2/N-m2
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