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ECAT Pre General Science Physics Chapter 14 Electromagnetism
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Total Questions30
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Time Allowed30
ECAT Pre General Science Physics Chapter 14 Electromagnetism
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Question # 1
For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
Question # 2
NmA-1 is commonly called:
Question # 3
The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
Question # 4
Avo-meter is used of measure the
Question # 5
The strength of magnetic field around the current conductor is
Question # 6
The vector representation of force experience give the direction of
Question # 7
The e/m of an electron moving in a circular path in a magnetic field is equal to
Question # 8
The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of
Question # 9
The force experienced by charged particle is maximum, if it moves
Question # 10
Centripetal force for electron is given by
Question # 11
A long wire wound tightly on a cylindrical core is called:
Question # 12
The SI unit of magnetic flux is.
Question # 13
Magnetic lines of force:
Question # 14
In the expression of force experienced by electron, the direction of both v and B are
Question # 15
When some compass needles are placed on a card board along a circle with the center at the wire, they will
Question # 16
F = I(L x B) is a
Question # 17
A current carrying conductor sets up its own:
Question # 18
The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
Question # 19
The SI unit of magnetic permeability is
Question # 20
41 The force experience, when proton projected in a magnetic field with velocity 'v' is
Question # 21
Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
Question # 22
In order to make a voltmeter, high resistance is connected with galvanometer, in
Question # 23
The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
Question # 24
A relationship between Gauses of magnetic induction and Tesla(T) is given by
Question # 25
A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is
Question # 26
In a moving coil galvanometer, the deflecting couple depends upon
Question # 27
In the formula B= µ̻ nl, the symbol n denotes:
Question # 28
The SI unit of magnetic induction is tesla which is equal to
Question # 29
The working of galvanometer depends upon torque exerted on a current carrying coil in
Question # 30
When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
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