Electromagnetic Induction - Result Question 31

31. If N is the number of turns in a coil, the value of self inductance varies as

[1993]

(a) N0

(b) N

(c) N2

(d) N2

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Answer:

Correct Answer: 31. (c)

Solution:

  1. (c) L=Nϕi;ϕ=BA;B=μ0Ni2R

L=Ni(μ0Ni2R)A=μ0N22RALN2



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