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What is the resistance of a coil of aluminium wire
The resistance of a coil of aluminium wire at 18?C is 200?.
The temperature of the wire is increased and the resistance rises to 240 ?.
If the temperature coefficient of resistance of aluminium is 0.0039/ ?Cat18?C verify the temperature to which the coil has risen.
Give the theory of plane diffraction grating for normal incidence.
The velocity with which the group of waves travels is called as group velocity or the velocity with which a ray packet goes is called as group velocity
Process to calculate teh number of atoms per unit cell The number of atoms per unit cell is equal to the product of 'the number of atoms per basis' and 'the number of basis per
Factors which are affect velocity of sound in gaseous medium is (1) Effect of density (2) Effect of pressure (3) Effect of temperature : (4) Effect of humidity
A body of mass m1 , moving with velocity u1 collides head on with a body of mass m2 moving with a velocity u2 the two bodies stick together after the collision the loss of kinetic
what is the magnetic field at a distance l from the centre of the circle of radius r which carries a current i
Car travelling 60 km per hour Overtakes another car travelling at 42km per hour. Asuming each car to be 5metre long . Find totoal time taken during the Overtake. and road distance.
Define, with the help of diagram, the principle and working of an a.c. Generator. Write the expression for the e.m.f. generated in the coil in terms of its speed of rotation
Define drift velocity and derive an expression for it?
Synchronous motor can work at any power factor i.e. lagging, unity or at leading power factor. Synchronous motor when used to better the power factor only is known as " Synchronou
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