Electromagnetic induction As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it Lies in a magnetic field Moves parallel to the direction of the magnetic field Lies perpendicular to the magnetic flux Cuts magnetic flux Lies in a magnetic field Moves parallel to the direction of the magnetic field Lies perpendicular to the magnetic flux Cuts magnetic flux ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be 12 mH 3 mH 24 mH 48 mH 12 mH 3 mH 24 mH 48 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Aid the applied voltage Tend to decrease the amount of current Produce current opposite to the increasing current Aid the increasing current Aid the applied voltage Tend to decrease the amount of current Produce current opposite to the increasing current Aid the increasing current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by Variation in coil current Change of number of turns of coil The resistance of magnetic path Variation in voltage to the coil Variation in coil current Change of number of turns of coil The resistance of magnetic path Variation in voltage to the coil ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two 300 uH coils in series without mutual coupling have a total inductance of 600 uH 900 uH 1200 uH 300 uH 600 uH 900 uH 1200 uH 300 uH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will None of the listed here Remains same Increases Decreases None of the listed here Remains same Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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