Physics · Electromagnetic Induction
The self-inductance per unit length in air of a system consisting of two long parallel wires, each of radius 'r' and separated by a distance 'd' between their axes (where d >> r), is expressed as:
- 1(μ0/π) loge((d-r)/r)✓
- 2(μ0/π) loge(d/(r+d))
- 3(μ0/π) loge((d+r)/r)
- 4(μ0/π) log10((d+r)/r)
Correct answer
(μ0/π) loge((d-r)/r)
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