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why at critical temperature in superconductors resistance becomes zero?Solution) For conductors as the temperature increases their rasistance increases and as temperature decreases the resistance decreases. If we continously decrease the temperature then a stage comes that the resistance of conductor becomes zero. The corresponding temperature is known as critical temperature. So at critical temperature the resistance becomes zero.
HEAD-ON COLLISION: "If the centers of the colliding bodies stay moving along the similar straight line, the collision is said to be head-on collision".
Instructors Own Problem: 1) On the surface of some strange planet, Mr. Spock finds his weight to be1200N. He then goes 5000km above the surface, and finds his weight to be on
State and prove law or Parallelogram of Froces
What are the safety terms to be inspected on wiring? Ans: Safety terms to be checked on wiring are securing of wiring through cleats with trough provision of correct size of
Ohm's law (G. Ohm; 1827): The ratio of the potential difference among the ends of a conductor to the current passing through it is constant; the constant of proportionality is
(i) Meter : The presently accepted definition of meter is the length of path travelled by light in space in 1/299,792,458th second. (ii) Kilogram : Kilogram is the fundamental
parsec: The unit of distance explained as the distance mentioned by an Earth-orbit parallax of 1 arc sec. It equals approximate 206 264 au, or about 3.086 x 10 16 m.
Artificial satellites 1. Satellites help to develop reliable communication links between different countries separated by large distances on the globe. The communications inclu
newton; N (after Sir I. Newton, 1642-1727) The derived SI unit of force, explained as the force needed to give a mass of 1 kg an acceleration of 1 m/s 2 ; thus it has units of
i need a full explanation on magnetism
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