The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases asA. `1` and `A` increasesB. `1` decreases and `A` increasesC. `1` increases and `A` decreasesD. both `1` and `A` decreases

The self inductance L of a solenoid of length l and area of cross-sect

1.	The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases asA. `1` and `A` increasesB. `1` decreases and `A` increasesC. `1` increases and `A` decreasesD. both `1` and `A` decreases
Answer» Correct Answer - B The self-inductance of a long solenoid of cross-sectinal area `A` and length `1`, having `n` turns per unit length, filled the inside of `s` the solenoid with a material of relative permeability (e.g., soft iron, which has a high value of relative permeability) is given by `L = mu_(r ) mu_(0)n^(2)Al` where, `" "n = N//1`

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The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases asA. `1` and `A` increasesB. `1` decreases and `A` increasesC. `1` increases and `A` decreasesD. both `1` and `A` decreases

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