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- a it is absolutely correct ans
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a , c , d
Explanation:
Induced emf e=Δϕ/Δt
So, e=nBA/t
As no. of turns increases, induced emf increases.
More is the magnetic moment of the magnet, more is the magnetic field produced by it hence is the induced emf.
With increase in the speed of the magnet, change in magnetic flux linked with coil changes, hence induced emf changes.
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