Question
Download Solution PDFAccording to Lenz’s law, which of the following are the parameters of cause and effect, respectively?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFInduced EMF in electrical machine
The EMF induced in any electrical machine is given by:
\(E={-N}{dϕ \over dt}\)
where, dϕ/dt = Rate of change of flux
- sign represents Lenz's law
The electrical machines operate on Faraday's and Lenz's laws.
According to Faraday's law, the magnitude of emf induced in the coil is equal to the rate of change of flux that linkages with the coil.
According to Lenz's law, the direction of induced emf is such that, it opposes the cause that produces it. The cause that is producing it is the change of flux.
Therefore, the change in flux and induced EMF are the parameters of cause and effect in Lenz law.
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