Question: Q. 5. (i) Define mutual inductance and write its S.I. unit.
(ii) Derive an expression for the mutual inductance of two long co-axial solenoids of same length wound one over the other.
(iii) In an experiment, two coils
R U A [Delhi I, II, III 2015]
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Solution:
Ans.(i) (ii) Try yourself, Similar to Q. 2, Short Answer Type Questions-II
2
(iii) Let a magnetic flux be
We have :