Magnetism and Electromagnetism When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle will depend on the amount of e.m.f. applied will be zero will depend on the radius of the circle will be infinite will depend on the amount of e.m.f. applied will be zero will depend on the radius of the circle will be infinite ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Substances which have permeability less than the permeability of free space are known as Paramagnetic material Diamagnetic material Bipolar Ferro magnetic material Paramagnetic material Diamagnetic material Bipolar Ferro magnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m? 111 At/Wb 11 At/Wb 1 At/Wb 1111 At/Wb 111 At/Wb 11 At/Wb 1 At/Wb 1111 At/Wb 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? 300 At 150 At 100 At 200 At 300 At 150 At 100 At 200 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wire-wound core, an increase in current through the coil Decreases the flux density Causes no change in flux density Increases the flux density Reverses the flux lines Decreases the flux density Causes no change in flux density Increases the flux density Reverses the flux lines ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The main constituent of permalloy is Nickel Tungsten Cobalt Chromium Nickel Tungsten Cobalt Chromium ANSWER DOWNLOAD EXAMIANS APP
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