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what is the formula of work done
two free charges +q and +5q are a distance L apart. A third charge is placed so that the entire system is in equilibrium.find the location and magnitude and sign of the charge.
Brewster's law (D. Brewster) The extent of the polarization of light reflected through a transparent surface is maximum while the reflected ray is at right angles to the refra
Q. Name the types of photoelectric cells? The photo electric cells are of three kinds: A) Photo emissive cell B) Photo voltaic cell and C) Photo conductive cell.
Q. What is the density of energy states in metals? Obtain an expression for the density of states for free electron gas in metals. Ans. Density of energy state is define
An electric dipole is held in a uniform electric field. (1) Using suitable diagram, show that it does not undergo any translatory motion, and (2) derive an expression for the
Draw and explain V-I characteristics of constant voltage and constant current sources. Ans: V-I Characteristics of Constant Voltage Source: A voltage source that has very low
Q. Collector current I c =20 mA and base current I b = 50 A. Find current gain β of a transistor. β = I C / I B = 20 X 10 -3 / 50 X 10 -6 = 400
Q. Assume an economy is in a liquidity trap. A. Write an equation expressing interest rate parity under a fixed exchange rate regime. Answer: Liquidity trap entail R = 0
What is the difference among isolation transformers and step up or step down transformer? Actually an isolation transformer may be physically the similar as a Step up/Step Down
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