Related Questions
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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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If the number of valence electrons of an atom is less than 4a then the substance is probably
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The electric flux density is a ________ quantity.
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Referred to as the specific reluctance of a material
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The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point will be
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If a 20 V potential is applied across a relay coil with 50 turns having 1 ? of resistancea the total magnetomotive producing magnetic flux in the circuit is
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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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The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization when subjected to a dc magnetic field.
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The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab of relative permittivity 5 is placed between the platesa then electric field intensity will be
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The force acting on a unit n- pole placed at that point is called
A. Magnetic field intensity
B. Electric field intensity
C. Electromagnetic field intensity
D. Intensity magnetization
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Electric lines of force leave or enter the charge surface at an angle of
D. depending upon the angle of launch and entry
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Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
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A substance that attracts pieces iron
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The K shell or the first shell has how many permissible number of orbiting electrons?
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A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about 12 grades.
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Electric field intensity at a point due to a given charge ______ if the relative permittivity of the medium decreases.
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If the value of 0 a conductor is 1/234 per oCa then the value of 18is
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Lenz's law is the consequence of the law of conservation of
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The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
B. Dependent on the area of the loop
C. Dependent on the shape of the loop
D. Dependent on the magnitude of the field
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The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force is known as
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Which of the following is used by permanent magnets as the magnetic material?
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Electric field intensity is a ________.
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The energy stored in an electrostatic field or electromagnetic field is called
A. Electromagnetic energy
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Which of the following electric quantities is vector in character?
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An alloy of 40 percent iron and 60 percent nickel.
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The force of attraction or repulsion between two magnetic poles is inversely proportional to the square of the distance between them. This is known as
B. Faraday's first law of electromagnetic induction
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A t/m is a unit of
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Who discovered superconductivity in 1911?
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If the relative permittivity of a material is 10a then its permittivity is
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The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
D. Electromagnetic induction