Problem 5.5 A current I flows down a wire of radius ?. a) If it is uniformly distributed over the surface, what is the surface current density ?? b) If it is distributed in such a way that the volume current density is inversely proportional to the distance from the axis, what is ??
Problem 2|Chapter 29 |Electric Field and Potential |Concept of Physics |HC VERMA
Problem 2
A charge of 1.0? is placed at the top of your college building and another equal charge at the top of your house. Take. the separation between the two charges to be 2.0??. Find the force exerted by the charges on each other. How many times of your weight is this force?
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Problem 02 | Chapter 45 | HC VERMA | IIT JEE | Semiconductors and Semiconductor Devices
Problem 02
In a pure semiconductor, the number of conduction electrons is ? × ??^?? per cubic metre. How many holes are there in a sample of size ? ?? × ? ?? × ? ???
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Problem 07 | Chapter 45 | HC VERMA | IIT JEE | Semiconductors and Semiconductor Devices
Problem 07
Suppose the energy liberated in the recombination of a hole–electron pair is converted into electromagnetic radiation. If the maximum wavelength emitted is 820 nm, what is the band gap?
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Problem 3.1 IE IRODOV
Problem 3.1
Calculate the ratio of the electrostatic to gravitational interaction forces between two electrons, between two protons. At what value of the specific charge ?/? of a particle would these forces become equal (in their absolute values) in the case of interaction of identical particles?
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Question 1| GATE (PH) 2021| Physics| PYP Solution
Question 1
Choose the graph that best describes the variation of dielectric constant (?_?) with temperature (?) in a ferroelectric material. (?_? ?? ?ℎ? ????? ???????????)
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