Magnetism and Electromagnetism A permanent magnet Attracts ferromagnetic substances and repels all others Attracts some substances and repels others Attracts only ferromagnetic substances Attracts all paramagnetic substances and repels others Attracts ferromagnetic substances and repels all others Attracts some substances and repels others Attracts only ferromagnetic substances Attracts all paramagnetic substances and repels others 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 decreases reverses polarity remains unchanged increases decreases reverses polarity remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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 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 will depend on the amount of e.m.f. applied will be zero ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism How does the magnetic compass needle behave in a magnetic field? It starts rotating It assures a position right angle to magnetic field It assures a position which follows a line of magnetic flux None of the listed here It starts rotating It assures a position right angle to magnetic field It assures a position which follows a line of magnetic flux None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The main constituent of permalloy is Cobalt Nickel Tungsten Chromium Cobalt Nickel Tungsten Chromium ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Ferrites are a sub-group of Ferri-magnetic material Non-magnetic materials Paramagnetic material Ferro magnetic material Ferri-magnetic material Non-magnetic materials Paramagnetic material Ferro magnetic material ANSWER DOWNLOAD EXAMIANS APP
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