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ECAT Pre General Science Physics Chapter 14 Electromagnetism Online Test
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Total Questions30
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Time Allowed30
ECAT Pre General Science Physics Chapter 14 Electromagnetism Online Test
If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is
if the field is directed along the normal to the area, then flux is:
A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
The magnetic field inside a solenoid can be increased by:
(CRO) Cathode ray oscilloscope is a device used for high speed
At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:
Lorentz force is defined as
A full-scale deflection is obtained in a galvanometer with a current of few
A voltmeter is used to measure the
A charged particle moving at right angle to the magnetic field will experience
The SI unit of flux density is
Weber is a unit of
It is customary represent a current flowing towards the reader by a symbol
How many number of anodes used in electron gun
The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
The CRO is used for displaying the waveform of a given
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
The current sensitivity of the galvanometer is
When some compass needles are placed on a card board along a circle with the center at the wire, they will
In order to make a voltmeter, high resistance is connected with galvanometer, in
The current is measured in
If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
When the charged particle is projected at right angles to the field, then experienced by it will be:
Magnetic lines of force:
the current is pass
through the straight wire. The magnetic field established around it has its
lines of force:
A resistance used in galvanometer to make it voltmeter is called
The voltage increases linearly with
A shunt resistance parallel to the galvanometer is used to convert it into
A solenoid is a coil of wire which is:
In the region surrounding a current carrying wire:
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