Question
Download Solution PDFA coil having 100 turns is placed in the magnetic field of 1m wb. Find the average EMF induced if the coil is moved in 0.2 seconds from the given field to a field of 0.4m wb.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
The magnitude of the induced EMF in a coil is given by:
\(E=N{dϕ\over dt}\)
\(E=N\times ({ϕ_2-ϕ_1\over t_2-t_1})\)
where, N = No. of turns
ϕ = Flux in Weber
t = Time in sec
Calculation
Given, N = 100
\(E=100\times ({1-0.4\over 0.2-0})\times 10^{-3}\)
E = 0.3 volt
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