1. A paramagnetic material has a magnetic field intensity of 104 Am-1. If the susceptibility of the material at room temperature is 3.7×10-3. Calculate the magnetization and flux density in the material. Given H = 104 A m-1, χ = 3.7 × 10-3, I =?, B = ? Solution:- (i) [latex] \begin{aligned} \chi & =\frac{\mathrm{I}}{\mathrm{H}}
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1. Calculate the intrinsic carrier concentration in germanium at 300 K. Given that me *=1.09 m0, mh *=0.31 m0 and Eg = 0.68 eV. Given T = 300 K, k=1.38×10-23 Jk-1, h=6.626×10-34 Js, m0 = 9.11×10-31 Kg, Eg = 0.68 eV = 0.68×1.6×10-19 J, me *=1.09 m0 = 9.929×10-31 Kg, mp* = 0.31 m0 =
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1. A uniform silver wire has a resistivity of 1.54 × 10-8 Ωm at room temperature, for an electrical field along the wire of 1 V/cm. Compute the drift velocity of electron assuming the there are 5.8 × 1028 Conducting electrons/m³. Also calculate the mobility. Given ρ = 1.54 × 10-8 Ωm, E = 1
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1. If an ionic crystal is subjected to an electric field of 1000 V/m and the resulting polarization is 4.3 × 10-8 cm², Calculate the relative permittivity of the crystal. Given E = 1000 V/m, ε0 =8.85×10-12 F/m, P = 4.3 × 10-8 C/m², εr = ? Solution :- [latex] \begin{aligned} P & =\varepsilon_{\mathrm{o}}\left(\varepsilon_{\mathrm{r}}-1\right) \mathrm{E} \\
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1. A person pulls a bench from one place to another using _____ on the object. Answer : Force 2. A motor cycle-is fitted with springs and shock absorbers, because Answer : It helps to reduce jerks while moving on uneven roads 3. An object that emits its own light is called ________ Answer :
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There are several physical signs of stress, including: Muscle tension: Muscle tension brought on by stress can result in headaches, back or neck discomfort, and general body pains. Fatigue: Chronic stress can make you physically and mentally exhausted. People may experience fatigue, sluggishness, and low energy. Digestive problems: Digestive problems like stomach aches, bloating, constipation,
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A meteorite is a solid chunk of space junk that crashes to the planet’s surface. It is a natural object that made it through the atmosphere of Earth and down to the earth. Depending on where in the solar system they came from, meteorites can have varied compositions since they are formed of different kinds
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The size, composition, speed, angle of entry, and location of the asteroid’s impact would all affect how it would affect Earth and how it would affect it. A small asteroid may harm the nearby area like a major explosion if it were to strike the Earth. The impact of the asteroid on a populated location
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Astronomers have been concerned about the near-Earth asteroid Apophis because it could collide with Earth. When the asteroid was found in 2004, there was considerable worry that it might hit the Earth in 2029. Even if later observations ruled out a direct collision in 2029, there is still a remote chance that one will occur
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A tiny, rocky or metallic object that circles the sun is called an asteroid. The asteroid belt, which spans the space between Mars and Jupiter’s orbits, is where the majority of asteroids are found. While others have orbits that bring them closer to Earth and other planets, some asteroids do. Asteroids can range in size
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