An alloy of 40 percent iron and 60 percent nickel.
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A test charge means a charge of
The resistivity of a conductor ___________ with an increase in temperature.
The contribution to the ionization in an ionization chamber by electrons liberated from t he walls.
What is used as the dielectric material in high voltage transformers?
The magnetic flux through a wire loop in a magnetic field does not d
When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
Small voltages generated by a conductor with current in an external magnetic field.
The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
Electric lines of force leave or enter the charge surface at an angle of
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A group of magnetically aligned atoms is called
Ohm's law cannot be applied to which material?
The air space between poles of magnets
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Which of the following is used by permanent magnets as the magnetic material?
The force between two magnetic poles varies with the distance between them. The variation is ______…
Electric field intensity at a point due to a given charge ______ if the relative permittivity of the…
If the number of valence electrons of an atom is less than 4a the substance is called
Paramagnetic substance has a relative permeability of
What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
What determines the value of the temperature coefficient of resistance of a material?
Which of the following statements is TRUE?
The lagging effect between flux density of the material and the magne
The emf induced in a coil due to the changing current of another neighboring coil is called
If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
The emission of electrons from hot bodies is called
One of the solid structures in which the position of the atoms or ions are predetermined
If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
The relation between absolute permittivity of air ( 0)a absolute p and velocity of light (c) is given…
What is the cgs unit of magnetomotive force?
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