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Which of the following combinations has the dimension of electrical resistance ( ∈ 0 is the permittivity of vacuum and μ 0 is the permeability of vacuum)?

1. 0 0 μ ∈
2. 0 0 μ ∈
3. 0 0 ∈ μ
4. 0 0 ∈ μ

Correct answer: 0 0 ∈ μ

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