The generation of an electric current in a closed circuit by a changing magnetic field is 1) electromagnetism2) electromagnetic induction3) electromagnetic spectrum4) electromagnetic force.

The correct answer is option 2.

Explanation:

When any closed circuit is kept in the varying magnetic field small amount of  electromotive force is generated in the in the circuit which gives rise to generation of electric current in a circuit. This phenomena of the induction of the electricity is named as electromagnetic induction.

This phenomena was discovers by Micheal Faraday.

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there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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