Question
Download Solution PDFA coil of 360 turns is linked by a flux of 200 μ Wb. If the flux is reversed in 0.01 second, then find the EMF induced in the coil.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Average induced emf is given by \(E = N\frac{{d\phi }}{{dt}}\)
Where N is the number of turns
dϕ is changing in flux
dt is changing in time
Calculation:
Given that, number of turns (N) = 360
Change in time (dt) = 0.01 s
Magnetic flux (ϕ) = 200 μWb
Since the flux is reversed, it changes from 200 μWb to -200 μWb, which is a change of 200 – (-200), i.e. 400 μWb
Change in magnetic flux (dϕ) = 400 μWb
\(E = 360 \times \frac{{400 \times {{10}^{ - 6}}}}{{0.01}} = 14.4\;V\)
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