Magnetism and Electromagnetism What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m? 10 AT 8 AT 16 AT 4 AT 10 AT 8 AT 16 AT 4 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit of flux is the same as that of Resistance Permanance Reluctance Pole strength Resistance Permanance Reluctance Pole strength ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permanent magnet Attracts only ferromagnetic substances Attracts ferromagnetic substances and repels all others Attracts all paramagnetic substances and repels others Attracts some substances and repels others Attracts only ferromagnetic substances Attracts ferromagnetic substances and repels all others Attracts all paramagnetic substances and repels others Attracts some substances and repels others ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will Decrease Be excessive Increase Remain Constant Decrease Be excessive Increase Remain Constant ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetic reluctance of a material Any of the listed here Increases with increasing cross-sec-tional area of material Does not vary with increasing cross-sectional area of material Decreases with increasing cross sectional area of material Any of the listed here Increases with increasing cross-sec-tional area of material Does not vary with increasing cross-sectional area of material Decreases with increasing cross sectional area of material ANSWER DOWNLOAD EXAMIANS APP
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