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 30 At 300 At 18.75 At 187 At 30 At 300 At 18.75 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Ferromagnetic material Ferrits Diamagnetic material Paramagnetic material Ferromagnetic material Ferrits Diamagnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Ferrites are a sub-group of Paramagnetic material Ferri-magnetic material Non-magnetic materials Ferro magnetic material Paramagnetic material Ferri-magnetic material Non-magnetic materials Ferro magnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A basic one-loop dc generator is rotated at 90 rev/s. How many times each second does the dc output voltage peak (reach maximum)? 360 180 270 90 360 180 270 90 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the magnetic field expands magnetic field collapses direction of the magnetic field remains unchanged direction of the magnetic field reverses magnetic field expands magnetic field collapses direction of the magnetic field remains unchanged direction of the magnetic field reverses ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit for permeability is Wb Wb/At × m At/m At/Wb Wb Wb/At × m At/m At/Wb ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS