Magnetism and Electromagnetism What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 240 At 2,400 At 2.4 At 24 At 240 At 2,400 At 2.4 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Indicate which of the following material does not retain magnetism permanently. Hardened steel Soft iron None of the listed here Stainless steel Hardened steel Soft iron None of the listed here Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the magnetic field collapses magnetic field expands direction of the magnetic field reverses direction of the magnetic field remains unchanged magnetic field collapses magnetic field expands direction of the magnetic field reverses direction of the magnetic field remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the net magnetic moment should be zero? ferrimagnetic materials antiferrimagnetic materials antiferromagnetic materials diamagnetic materials ferrimagnetic materials antiferrimagnetic materials antiferromagnetic materials diamagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism In a simple magnetic field the strength of magnet flux decreases continuously from initial value to final value is constant and has same value in energy part of the magnetic field increases continuously from initial value to final value first increases and then decreases till it becomes zero decreases continuously from initial value to final value is constant and has same value in energy part of the magnetic field increases continuously from initial value to final value first increases and then decreases till it becomes zero ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Tesla is a unit of Flux density Inductance Field strength Flux Flux density Inductance Field strength Flux ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS