EEE :: Magnetism and Electromagnetism
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There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400
Wb? -
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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What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600
Wb? -
What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it?
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The direction of a magnetic field within a magnet is
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When the north poles of two bar magnets are brought close together, there will be
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The ability of a material to remain magnetized after removal of the magnetizing force is known as
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The voltage induced across a certain coil is 200 mV. A 120
resistor is connected to the coil terminals. The induced current is -
The induced voltage across a stationary conductor in a stationary magnetic field is
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