1.How are the calculated values of the induced emf affected if, instead, the mag

Question

1.How are the calculated values of the induced emf affected if, instead, the magnetic field changes uniformly from 0.500 T to 0 during the same time? (Select all that apply.) A)The induced emf has smaller magnitude. B)The induced emf has opposite sign. C)The induced emf has the same magnitude. D)The induced emf has larger magnitude. E)The induced emf has the same sign. 2.How are the calculated values of the induced current affected if the magnetic field changes uniformly from 0.500 T to 0 instead of changing as described in the example? (Select all that apply.) A)The induced current has the same sign. B)The induced current has the same magnitude. C)The induced current has larger magnitude. D)The induced current has smaller magnitude. E)The induced current has opposite sign.

Explanation / Answer

The relation between induced emf andmagnetic flux is inducedemf ( ? )= N (change in magnetic flux ) / (change in time) magnetic flux ? = B A cos ? B = magnitude of magneiticfield A = area of theloop so ? = N ?(B A cos?) / ?t = N A cos? ( ?B ) / ?t The induced emf has oppositesign.The induced emfhas the samemagnitude. the relation between current andinduced emf I = ? / R The induced current has the samemagnitude.Theinduced current has oppositesign.

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