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- Magnetism & Electromagnetism Mcqs - Set 6
MCQs 1: The Biot-savart’s law is a general modification of_______________?
MCQs 2: If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity?
less than that of disc but in opposite direction
equal to that of disc and in the same direction
equal to that of disc and in the opposite direction
less than that of disc and in the same direction
MCQs 3: What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200 ?
MCQs 4: The materials are a bit inferior conductors of magnetic flux than air
MCQs 5: he retentivity (a property) of material is useful for the construction of__________?
MCQs 6: he retentivity (a property) of material is useful for the construction of_______________?
MCQs 7: A permanent magnet______________?
attracts some substances and repels others
attracts all paramagnetic substances and repels others
attracts only ferromagnetic substances
attracts ferromagnetic substances and repels all others
MCQs 8: The relative permeability of materials is not constant
MCQs 9: A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be______________?
MCQs 10: Magnetic moment is a_____________?
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