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Electric Motor:
A device, which converts electric energy into mechanical energy is known as Electric Motor.
Factors on which the speed of Rotation of Motor Depends:
The speed of rotation of motor depends on the following factors.
1. Magnitude of current passing by the motor.
2. Strength of magnetic field.
3. Number of turns in the coil of the motor.
4. Permeability of its armature.
The electric field and electric potential at any point because of a point charge kept in air is 20 NC -1 and 10 JC -1 respectively. Compute the magnitude of this charge.
a projectile is fired from a gun has an initial velocity of 90.0 Km/h at an angle of 60.0 degrees to the horizontal. When the projectile is at top of its trajectory an internal exp
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Figure denotes a rod whose ends are in thermal contact with a hot reservoir at temperature T1 and a cold reservoir at temperature T2. The ends of the rod are covered with insulati
Q. An aircraft having awing span of 20.48 m flies at a speed of 40 ms -1 . If the vertical component of the earth's magnetic field is 2 X 10 -5 T, compute the emf induced between
what are the advantages of surface tension
How to identify a hard-boiled egg Secure a fresh egg and a hard-boiled egg. Give every of them a spinning motion in a soup dish or a plate. View that the hard-boiled one spins
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