Electromagnetic induction An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is 0.2 wb 20 wb 0.02 wb 2 wb 0.2 wb 20 wb 0.02 wb 2 wb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla 400 N 100 N 1000 N 300 N 400 N 100 N 1000 N 300 N ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will 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 Aid the applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it Cuts magnetic flux Lies perpendicular to the magnetic flux Moves parallel to the direction of the magnetic field Lies in a magnetic field Cuts magnetic flux Lies perpendicular to the magnetic flux Moves parallel to the direction of the magnetic field Lies in a magnetic field 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 Increases Decreases None of the listed here Remains same Increases Decreases None of the listed here Remains same ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Mutually inductance between two magnetically coupled coils depends on Cross-sectional area of their common core All of the listed here The number of their turns Permeability of the core Cross-sectional area of their common core All of the listed here The number of their turns Permeability of the core ANSWER DOWNLOAD EXAMIANS APP
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