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(a) Differentiate between self inductance and mutual inductance. (b) The mutual inductance of two coaxial coils is 2 H. The current in one coil is changed uniformly from zero to 0.5 A in 100 ms. Find the : (i) change in magnetic flux through the other coil. (ii) emf induced in the other coil during the change. |
Answer» Solution :(a)  (b) Here M = 2 H, `DeltaI_1=(0.5)=0.5A and Deltatau= 100 ms = 0.1 s` (i) CHANGE in magnetic flux through coil no . 2 `Deltaphi_(2)=MDeltaI_(1)=2xx0.5=1.0 Wb` (ii) INDUCED EMF in coil no . 2 `|epsilon|=M(DeltaI_1)/(Deltat) = 2xx(0.5)/(0.1)=10 V` |
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