Magnetism and Electromagnetism An electromagnetic field exists only when there is voltage an increasing current current decreasing current voltage an increasing current current decreasing current ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current? 2,400 At 240 At 2.4 At 24 At 2,400 At 240 At 2.4 At 24 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The uniform magnetic field is The field of a set of parallel conductors None of the listed here The field of a single conductor The field in which all lines of magnetic flux are parallel and equidistant The field of a set of parallel conductors None of the listed here The field of a single conductor The field in which all lines of magnetic flux are parallel and equidistant ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Paramagnetic material Ferromagnetic material Diamagnetic material Ferrits Paramagnetic material Ferromagnetic material Diamagnetic material Ferrits ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a ferromagnetic material? Nickel Tungsten Aluminium Copper Nickel Tungsten Aluminium Copper ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 187 At 300 At 18.75 At 30 At 187 At 300 At 18.75 At 30 At ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS