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 0.02 wb 2 wb 0.2 wb 20 wb 0.02 wb 2 wb 0.2 wb 20 wb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The inductance of a coil will increase under all the following conditions except When permeability of the core increases When the number of turns of the coil increase When more area for each turn is provided When more length for the same number of turns is provided When permeability of the core increases When the number of turns of the coil increase When more area for each turn is provided When more length for the same number of turns is provided ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Reversing the field or the current will reverse the force on the conductor. Yes No Yes No ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage? 0.2 s 0.1 s 0.5 s None of the listed here 0.2 s 0.1 s 0.5 s None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A laminated iron core has reduced eddy-current losses because More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The magnetic flux is concentrated in the air gap of the core The laminations are stacked vertically More wire can be used with less D.C. resistance in coil The laminations are insulated from each other The magnetic flux is concentrated in the air gap of the core The laminations are stacked vertically ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Lenz's law is a consequence of the law of conservation of Induced e.m.f. Induced current Charge Energy Induced e.m.f. Induced current Charge Energy ANSWER DOWNLOAD EXAMIANS APP
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