Related Questions
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One farad equals
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The reluctance of the magnetic circuit is ________ relative permeability of the material comprising the circuit.
A. directly proportional to
B. inversely proportional to
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A negative ion results when an atom gains an additional
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What is the unit of magnetomotive force?
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The mass of proton is __________ the mass of an electron.
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If the value of 25 of a conductor is 1/230 per oCa then the value of 0is
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An alloy of 40 percent iron and 60 percent nickel.
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What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring atoms or ions?
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When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
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What is the measure of the density and sign of the electric charge at a point relative to that at some time?
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The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole is called
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The physical motion resulting from the forces of magnetic fields is called
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One oersted (Oe) is equivalent to _____ Gb/cm.
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A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material three times as long and twice the cross-sectional area?
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How many neutrons does a copper atom have?
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Hipernik is an alloy containing __________ iron and __________ nickel.
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Electric field intensity is a ________.
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Defined as the number of lines per unit area through any substance in a plane at right angles to the lines of force
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The magnetic flux through a wire loop in a magnetic field does not d
B. The magnitude of the field
D. The angle between the plane of the loop and the direction
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Magnetic effects of the earth as a huge magnet with north and south poles.
D. Terrestrial ferromagnetism
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The air space between poles of magnets
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What is the main advantage of temporary magnets?
A. The magnetic flux can be changed.
B. Hysteresis can be decreased.
C. Magnetic materials can be used.
D. Abundance of ferromagnetic material that can be temporarily magnetized.
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Which of the following is a paramagnetic material?
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A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the number of ampere turns?
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What is the value of the absolute permittivity of air?
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The force between two charges placed a given distance apart ______ as the relative permittivity of the medium is increased.
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What principle states that each electron in an atom must have a different set of quantum numbers?
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A substance that attracts pieces iron
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Electric potential is a _______ quantity.
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The straight line passing through the two poles of magnet is called