Electromagnetic induction Lenz's law is a consequence of the law of conservation of Induced current Energy Induced e.m.f. Charge Induced current Energy Induced e.m.f. Charge 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 6 mH 48 mH 12 mH 24 mH 6 mH 48 mH 12 mH 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 If current in a conductor increases then according to Lenz's law self-induced voltage will Aid the applied voltage Produce current opposite to the increasing current Tend to decrease the amount of current Aid the increasing current Aid the applied voltage Produce current opposite to the increasing current Tend to decrease the amount of current Aid the increasing current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two 300 uH coils in series without mutual coupling have a total inductance of 600 uH 300 uH 1200 uH 900 uH 600 uH 300 uH 1200 uH 900 uH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the fpllowing inductor will have the least eddy current losses ? Air core Iron core Powdered iron core Laminated iron core Air core Iron core Powdered iron core Laminated iron core ANSWER DOWNLOAD EXAMIANS APP
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