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Changes Of resistance with temparature: The resistance of all materials changes with changes in temperature. The resistance of all pure metal increases with temperature. The
Que: What is an electric current? Answer: From Ohm's Law V = IR amid R being a constant one finds that I = V/R. therefore current is equal to voltage divided by resis
An express train, traveling at 36.0 m/s, is accidently sidetracked onto a local train track. The express engineer spots a local train exactly 100 m ahead of the same track and trav
Q. State any three laws of photo electric emission? (i) For a specified photo sensitive material there is a minimum frequency called the threshold frequency below which emissio
Basic principles of spectrophotometry: An absorbance spectrophotometer is an instrument that measures the fraction of the incident light transmitted through a solution
The length of a simple pendulum is about 100cm known to have a accuracy of 1mm.Its period of oscillation is 2s determined by measuring the time for 100oscillations using a clock of
Consider air (ideal gas) as working substance inside a piston-cylinder device (closed system). This air undergoes a power cycle as shown in figure. Determine work output per unit m
definition off terminal velocity
Henry; H (after W. Henry, 1775-1836): The derived SI unit of inductance, described as the inductance of a closed circuit wherein an electromotive force of 1 V is generated whe
Explain Shape of the earth? Shape and size of the earth. The shape of the earth is regarded as a sphere, but it is mainly an oblate spheroid like as egg being slightly flatter
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