Magnetism and Electromagnetism The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is 2,000 V 1,000 V 31.25 V 3,125 V 2,000 V 1,000 V 31.25 V 3,125 V ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The left hand rule correlates to Self induction, mutual induction and direction of force on a conductor Current, magnetic field and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, magnetic field and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Core of an electromagnet should have High susceptibility Both low coercivity and high susceptibility Low coercivity None of the listed here High susceptibility Both low coercivity and high susceptibility Low coercivity None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Degaussing is the process of Removing gases from the materials Removal of magnetic impurities Demagnetising metallic parts Remagnetising metallic parts Removing gases from the materials Removal of magnetic impurities Demagnetising metallic parts Remagnetising metallic parts ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the north poles of two bar magnets are brought close together, there will be a force of repulsion a force of attraction a downward force no force a force of repulsion a force of attraction a downward force no force ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetism left in the iron after exciting field has been removed is known as permeance residual magnetism susceptance reluctance permeance residual magnetism susceptance reluctance ANSWER DOWNLOAD EXAMIANS APP
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