A) \[\frac{{{n}_{2}}}{{{n}_{1}}}\]
B) \[\frac{{{n}_{2}}}{{{n}_{1}}}.\frac{r_{2}^{2}}{r_{1}^{2}}\]
C) \[\frac{{{n}_{2}}}{{{n}_{1}}}.\frac{{{r}_{1}}}{{{r}_{2}}}\]
D) \[\frac{{{n}_{1}}}{{{n}_{2}}}\]
Correct Answer: A
Solution :
[a] The mutual inductance of the inner coil |
...(i) |
Self inductance (L) of the inner coil is |
...(ii) |
Using (i) and (ii), |
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