Mutual Inductance Induced Emf — the NEET Physics formula with its derivation, variables, validity constraints and worked solver.
Mutual Inductance (Induced EMF) Used to calculate the voltage induced in a secondary circuit due to a time-varying current in a primary circuit, provided the two are magnetically coupled. Define magnetic flux linkage in secondary coil: Phi 2 = M i 1 Apply Faraday's law of electromagnetic induction: e 2 = -d(Phi 2)/dt Substitute the flux expression and treat M as a constant relative to time The mutual inductance M is assumed to be constant Valid for linear magnetic media Neglects secondary-to-primary feedback unless specified Thinking M depends on the current flowing through the coils (it only depends on geometry and medium) Ignoring the negative sign, which represents Lenz's Law Confusing Mutual Inductance with Self Inductance (L)