EXAMIANS
When the north poles of two bar magnets are brought close together, there will be
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What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m?
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A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?
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A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be
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The magnetic materials exhibit the property of magnetisation because of
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The attraction capacity of electromagnet will increase if the
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The change of cross-sectional area of conductor in magnetic field will affect
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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)?
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Main causes of noisy solenoid are
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Materials subjected to rapid reversal of magnetism should have
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