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This is a new generation of resistor having very low temperature coefficient of resistance. A metal foil made from a special alloy is bonded on to a flat ceramic substrate. The temperature coefficient of linear expansion of the foil and the substrate is matched in such a manner that temperature coefficient of resistance is nearly zero. Thus these resistors are used ultra high precision types with extremely good stability characteristics. They are used in ultra high precision equipments.
An α particle is a positively charged particle. Rutherford observed the behaviour of these particles when they approach the interior of the atoms as shown in fig. Rutherford ob
In a non-uniform magnetic material, these substances move from stronger parts of the field to the weaker parts.why?
(i) It is also known as impure semiconductor. (ii) The phenomena of adding impurity is known as Doping.
if a body contain n1 electron and n2 proton what is the total charge on the body?
derive the equation for reflection and transmission coefficient for s polarization
A triode valve which is acting as an amplifier gives a voltage gain of 30. If anode resistance is 20 K ? for valve and load resistance is 60 K ?, what is value of amplification fac
There is a maximum depth at which a diver can breathe through snorkel tube because as the depth increases, so does the pressure difference, tending to collapse the diver's lungs. S
energy mass relation
while taking readings in a deflection magnetometer the deflection should be between 30 degree and 60 degree.why?
Area of a Circle As a Limit Describing that the area of a circle is a limit of the sum of the area of interior triangles as the number of triangles goes to infinity.
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