Magnetism and Electromagnetism The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is 1.7 mA 16 mA 12 mA 120 mA 1.7 mA 16 mA 12 mA 120 mA ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The attraction capacity of electromagnet will increase if the Core area increases Flux density decreases Core length increases Flux density increases Core area increases Flux density decreases Core length increases Flux density increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetomotive force is The sum of all currents embraced by one line of magnetic field The voltage across the two ends of exciting coil The passage of magnetic field through an exciting coil The flow of an electric current The sum of all currents embraced by one line of magnetic field The voltage across the two ends of exciting coil The passage of magnetic field through an exciting coil The flow of an electric current ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon Motion of the magnet Number of turns of the coil Pole strength of the magnet Resistance of the coil Motion of the magnet Number of turns of the coil Pole strength of the magnet Resistance of the coil ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200? 8 4 6 12 8 4 6 12 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetic materials exhibit the property of magnetisation because of either of these spin of nucleus spin of electrons orbital motion of electrons either of these spin of nucleus spin of electrons orbital motion of electrons ANSWER DOWNLOAD EXAMIANS APP
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