How to calculate eMF equation?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The EMF (electromotive force) equation depends on context:
For AC generators: EMF = N × B × A × ω × sin(ωt)
- N = number of turns
- B = magnetic field strength
- A = coil area
- ω = angular frequency (ω = 2πf)
For changing magnetic flux: EMF = -N(dΦ/dt)
- This is Faraday's Law of electromagnetic induction
The frequency component appears through ω (angular frequency) in these equations.
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