Magnetism and Electromagnetism The magnetic materials exhibit the property of magnetisation because of orbital motion of electrons either of these spin of nucleus spin of electrons orbital motion of electrons either of these spin of nucleus spin of electrons ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density increases doubles decreases remains the same increases doubles decreases remains the same ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The most effective and quickest may of making a magnet from soft iron is by Placing it inside a coil carrying current Rubbing with another magnet Induction The use of permanent magnet Placing it inside a coil carrying current Rubbing with another magnet Induction The use of permanent magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 240 At 2.4 At 24 At 2,400 At 240 At 2.4 At 24 At 2,400 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m? 4 AT 16 AT 8 AT 10 AT 4 AT 16 AT 8 AT 10 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 150 At 300 At 200 At 100 At 150 At 300 At 200 At 100 At ANSWER DOWNLOAD EXAMIANS APP
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