Electromagnetic induction A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by 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 Variation in coil current 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 Remains same None of the listed here Decreases Increases Remains same None of the listed here Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The magnitude of the induced e.m.f. in a conductor depends on the Amount of flux linkages Flux density of the magnetic field Amount of flux cut Rate of change of flux-linkages Amount of flux linkages Flux density of the magnetic field Amount of flux cut Rate of change of flux-linkages ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area, length etc.) remaining the same, the inductance will be 24 mH 48 mH 6 mH 12 mH 24 mH 48 mH 6 mH 12 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is 1000 ohms 500 ohms 100 ohms 5000 ohms 1000 ohms 500 ohms 100 ohms 5000 ohms ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A crack in the magnetic path of an inductor will result in Unchanged inductance Reduced inductance Zero inductance Increased inductance Unchanged inductance Reduced inductance Zero inductance Increased inductance ANSWER DOWNLOAD EXAMIANS APP
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