Physical World Units and Measurements - Result Question 14

14. The dimension of 12ε0E2, where ε0 is permittivity of free space and E is electric field, is:

(a) [ML2T2]

(b) [ML1T2]

(c) [ML2T1]

(d) [MLT1]

[2010]

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Answer:

Correct Answer: 14. (b)

Solution:

  1. (b) 12ε0E2 represents energy density i.e., energy per unit volume. [12ε0E2]=[ML2T2][L3]=[ML1T2]


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