Electromagnetic induction
The magnitude of the induced e.m.f. in a conductor depends on the

Amount of flux linkages
Rate of change of flux-linkages
Flux density of the magnetic field
Amount of flux cut

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Electromagnetic induction
The inductance of a coil will increase under all the following conditions except

When permeability of the core increases
When more area for each turn is provided
When the number of turns of the coil increase
When more length for the same number of turns is provided

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