1.Electric field intensity ‘E’ at a point P (Figure 1) at a perpendicular distance ‘r’ from an infinitely long line charge X’X having linear charge density X is given by:
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2.A moving coil galvanometer can be converted into a voltmeter by connecting:
A low resistance in series with its coil.
A low resistance in parallel with its coil.
A high resistance in parallel with its coil.
A high resistance in parallel with its coil.
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3.The loss of power in a transformer can be reduced by:
Increasing the number of turns in primary
Increasing ac voltage applied to primary.
Using a solid core made of steel.
Using a solid core made of steel.
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4.Which equation represents the emission of a beta particle by a radioactive nucleus:
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5.An important component of Michelson’s method to determine speed of light is:
6.In an electric dipole, what is the locus of a point of zero potential?
The locus of the point of zero potential of an electric dipole is straight line drawn at the middle of the electric dipole.
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7.
What is the resistance of a carbon resistor whose coloured bands are shown below in figure below:
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8.A part of an electric circuit is shown below figure below:
Using Kirchhoffs 2nd Law, find the current I flowing through the 4 Ω resistor.
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9.Figure below shows a graph of emf‘e’ generated by an ac generator versus time ‘t’:
What is the frequency of the emf?
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10.Arrange the three types of magnetic materials, i.e., paramagnetic, diamagnetic and ferromagnetic materials, in decreasing order of their magnetic susceptibility.
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