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PPSC Physics Chapter 6 Electricity and Magnetism
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Total Questions20
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Time Allowed20
PPSC Physics Chapter 6 Electricity and Magnetism
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Question # 1
The coulomb's law is valid for the charges which are.
Question # 2
In the experiment of force on a current carrying conductor in a uniform magnetic field the magnitude of force depends upon which factor.
Question # 3
Alternating current generator consists of a coil and a pair of.
Question # 4
Which of the following is an electrical insulator that can be polarized by an applied electric field.
Question # 5
In any L-C-R circuit
Question # 6
An inductor may store energy in
Question # 7
An electric lamp use energy at the rate of 46 W on a 12 V supply. How much charge passes through the lamp in 2s.
Question # 8
The induced current in a circuit can be increased by
Question # 9
The permeability of a diamagnetic material is
Question # 10
If the transformer turns ratio is 2 and the impedance of primary coil is 250 Ohms then the impedance secondary coil will be.
Question # 11
When a wire moves perpendicularly to a magnetic field, the induced emf does ot depends upon
Question # 12
Which quantity decay exponentially when a capacitors is discharged.
Question # 13
What is the part of a simply D.C. motor that reverses the direction of current through the coil every half cycle.
Question # 14
The vertical component of earth's magnetics field is zero.
Question # 15
Tesla is the unit for measuirng
Question # 16
Conductance is the reciprocal of
Question # 17
Efficiency of a half wave recitifier is.
Question # 18
The resistance of a capacitor when it is connected with a battery is.
Question # 19
Two charged spheres are separated by 2 mm Which of the following would produce the greatest attractive force.
Question # 20
Lagging of magnetic flux density behind the magnetizing fled is known as.
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