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Q.

Let [εo] denote the dimensional formula of the permittivity of the vaccum and [μo] denote that of permeability of the vaccum. Find correct option if I = electric current:

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a

[εo] = M−1L−3T3

b

[εo] = M−1L3T4I2

c

[μo] = MLT−2I-2

d

[μo] = ML2T−1I

answer is C.

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Detailed Solution

εo = q1q2Fr2 = IT2MLT−2L2 = M−1L−3T4I2And μo = 1εoc2 = 1M−1L−3T4I2LT−12=[MLT−2I−2]
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