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a) Heat produced or absorbed at a junction is proportional to the current by the junction.
b) This effect is produced when current is passed by junction of suitable materials.
c) It is reversible effect.
d) Heat exchange depends upon nature of conductors and temperature of the junctions.
e) It can be heating as well as cooling effect.
Capacitors: When a voltage is applied to a capacitive circuit there is a change in the electric flux. The ease with which this change takes place is a measure of the capacitan
Aluminium is (A) Silvery white in colour. (B) Yellow in colour. (C) Reddish in colour. (D) Pale yellow in colour. Ans: Aluminium is Silvery white in c
What occures to Internal Energy of a system ,if work is done (a) on the system, (b) by the system.
Magnitude of K.E. in an orbit is equal to: (1)Half of the potential energy (2)Twice of the potential energy (3)One fourth of the potential energy (4 ) None
A right triangular prism has volume equal to 288 cm^3. The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine th
Production of a magnet: Magnets can be produced in a variety of ways, generally the method used is determined by the type of magnet required. Using the stroke method
Electrical energy: Electrical energy is the ability of an electrical system to do work. Energy is expended when work is done and the amount of energy used is equal to the wo
Two cars head out in the similar direction. Car A starts 1.0 min before car B. The position-time graphs for both cars are shown in the accompanying figure. a. How far apa
UNIT: SI unit of force is Newton (N).
Define magnetic moment of a current loop. The magnetic moment of a current loop is described as the product of the current and the loop area. Its direction is perpendicular to
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