The EMF Calculator computes the electromotive force induced in a coil when the magnetic flux through it changes with time, using the equation EMF=−N×(ΔΦ/Δt)\text{EMF} = -N × (ΔΦ / Δt)EMF=−N×(ΔΦ/Δt). Here, NNN represents the number of turns in the coil, ΔΦΔΦΔΦ is the change in magnetic flux measured in webers, and ΔtΔtΔt is the time interval in seconds. The negative sign indicates that the direction of the induced EMF opposes the change in magnetic flux, as stated by Lenz’s Law. This calculator helps users analyze electromagnetic induction and understand how changing magnetic fields generate voltage in coils, generators, and transformers.