This paper does not exhibit electricity because it contains the same number of
protons and electrons
neutrons and electrons
neutrons and positrons
Correct Answer :
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The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
The resistivity of a conductor ___________ with an increase in temperature.
Which of the following is a paramagnetic material?
If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
The B-H curve for ________ is a straight line passing through the origin.
When the relative permeability of a material is slightly less than 1a it is called _____ material.
The electrons in the last orbit of an atom are called _______ electrons.
A germanium atom has an atomic weight of72. How many neutrons are there?
When the relative permeability of a material is slightly more than 1a it is called ______ material.
Mmf in a magnetic circuit corresponds to _____ in an electric circuit
A negatively charge body has
The energy stored in an electrostatic field or electromagnetic field is called
Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
The evaporation of electrons from a heated surface is called
A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
If the length and area of cross-section of a wire are doubleda then its resistance
If the value of 0 a conductor is 1/234 per oCa then the value of 18is
The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
What is the SI unit of conductance?
The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
The diameter of a hydrogen atom is approximately ______ cm.
Under ordinary conditionsa a body is considered
Electron is a Greek word for
Which of the following is a diamagnetic material?
How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
What is the SI unit of reluctance?
The unit of electrical energy is
An effect which is generally used in the gausameter to measure flux density.
Electric lines of force leave or enter the charge surface at an angle of
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