NCERT Class XII Chapter
Electromagnetic Induction
Questions With Solutions
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Question : 9
Total: 17
A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0 to 20 A in 0.5 s, what is the change of flux linkage with the other coil?
Solution:
Let the current changes from 0 to 20 A in coil 1 and we are looking for change of flux linked with coil 2.
ϕ 2 = M I 1
andΔ ϕ 2 = M Δ I 1
Δ ϕ 2 = 1.5 [20 - 0] or Δ ϕ 2 = 30 Wb
and
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