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 28 mH 3 mH 12 mH 24 mH 28 mH 3 mH 12 mH 24 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Lenz's law is a consequence of the law of conservation of Induced current Induced e.m.f. Energy Charge Induced current Induced e.m.f. Energy Charge ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A crack in the magnetic path of an inductor will result in Unchanged inductance Increased inductance Reduced inductance Zero inductance Unchanged inductance Increased inductance Reduced inductance Zero inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is 36 mH 12 mH 6 mH 18 mH 36 mH 12 mH 6 mH 18 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two coils have inductances of 8 mH and 18 mH and a coefficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be 48 mH 36 mH 38 mH 30 mH 48 mH 36 mH 38 mH 30 mH 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 Change of number of turns of coil Variation in coil current The resistance of magnetic path Variation in voltage to the coil Change of number of turns of coil Variation in coil current The resistance of magnetic path Variation in voltage to the coil ANSWER DOWNLOAD EXAMIANS APP