Magnetism and Electromagnetism An electromagnetic field exists only when there is current an increasing current voltage decreasing current current an increasing current voltage decreasing current ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Ferromagnetic materials Paramagnetic materials Diamagnetic materials Ferrites Ferromagnetic materials Paramagnetic materials Diamagnetic materials Ferrites ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage increases reverses polarity remains unchanged decreases increases reverses polarity remains unchanged decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetic reluctance of a material Does not vary with increasing cross-sectional area of material Increases with increasing cross-sec-tional area of material Decreases with increasing cross sectional area of material Any of the listed here Does not vary with increasing cross-sectional area of material Increases with increasing cross-sec-tional area of material Decreases with increasing cross sectional area of material Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit for permeability is Wb Wb/At × m At/Wb At/m Wb Wb/At × m At/Wb At/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage reaches zero decreases increases remains constant reaches zero decreases increases remains constant ANSWER DOWNLOAD EXAMIANS APP
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