The electron drift speed is 2.2x10-4 m/s in a metal with a mean free time between collisions of 5.6x10-14 s. Part A What is the electric field strength? Express your answer to two significant figures and include the appropriate units.. E = Submit LO μÅ Value Request Answer Units ?
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- What is the number density of free electron carries in the metallic element nickel if the electrons available for electrical conduction is 1 e- per nickel atom? The atomic mass of nickel is 58.6934 g/mole and the density of nickel is 8.902 g/cm3. a. 3.32 x 1028 e- ' s /m3 b. 1.56 x 1029 e- ' s /m3 c. 5.64 x 1028 e- ' s /m3 d. 9.13 x 1028 e- ' s /m3 e. 7.63 x 1028 e- ' s /m3Conduc-Thor-s. Thor has two square prism conductors that are made of the same ohmic material and with properties indicated below. Conductor Length | Cross-Section Side Length Alpha L Beta L/2 s/4 Suppose both conductors are subject to the same potential difference AV across their length while keeping their temperatures fixed. Which of the following is the correct relation between the electric currents, Ia and IB, through Alpha and Beta? O A. Ia = 8IB O B. 8Ia = Ig O. Ia = 4I8 O D. 4Ig = Ig Clear my choiceQ. The ends of the cylinder are made of conducting discs and the space between these discs are filled with an inhomogeneous ohmic medium whose conductivity o = L/(z+1). Where L is the separation distance of the discs. A d-c voltage Vo is applied across the discs as shown on the right. Determine V. a) The total resistance between the discs b) The surface charge densities on the discs c) The volume charge density and the total amount of charge between the discs
- 按ESC | 即可退出全屏模式 Gas insulation is important for transmission lines, outdoor insulators and Gas-insulated- Substations (GIS). Understanding the breakdown mechanisms and behaviour of insulation materials is key to the optimum design of insulation systems. The speed distribution function of electrons in a gas containing electrons, ions and atoms is controlled by the electric field strength, E, and can be expressed as fo (E, v). It satisfies the relationship of (E, v) dv=1. i) ii) Convert the above electron speed distribution function into an electron energy distribution function that satisfies the relationship f(E, ɛ) dɛ =1 where & is the electron energy and ƒ(E, ɛ) the electron energy distribution function. The electron number density is ne and the atom number density is na in the gas. The ionisation cross section of the atoms by electron impact is a function of electron energy, ɛ, and can be written as σ¡ (ɛ). Similarly, the attachment collision cross section between an electron and an…Problem 1: The voltage across a membrane forming a cell wall is 83 mV and the membrane is 7.75 nm thick. What is the electric field strength in the cell wall, in volts per meter?A charged belt, 50 cm wide, travels at 30 m/s between a source of charge and a sphere.The belt carries charge into the sphere at a rate corresponding to 100 mA. Compute the surface charge density on the belt
- Cylindrical-conductors has inner and outer radii of 25 mm and 50 mm, respectively. If V(p = 25 mm) = 0 V and V(p = 50 mm) = 300 V, ɛr = 15 %3D calculate : a. V, E, and D at p = 40 mm b. Ps on each plate. %3DSoru 9 X-2x10 cm X=1x105 cm E(0)= -2x104 v/cm For given electric field of an pn junction calculate the magnitude built in potental in units of mV. Write your answer as positive integer. Yanıt: 210703141851-22397 Önceki sayfa 46 శండిడింThe electron drift speed is 2.5×10−4 m/s in a metal with a mean free time between collisions of 4.2×10−14 s. What is the electric field strength?
- Suppose Earth and the Moon each carried a net negative charge Q . Approximate both bodies as point masses and point charges. (a) What value of Q is required to balance the gravitational attraction between Earth and the Moon? (b) Does the distance between Earth and the Moon affect your answer? Explain. (c) How many electrons would be needed to produce this charge?Thor has two square prism conductors that are made of the same ohmic material and with properties indicated below. Conductor | Length | Cross-Section Side Length Alpha L Beta L/2 8/4 Suppose both conductors are subject to the same potential difference AV across their length while keeping their temperatures fixed. Which of the following is the correct relation between the electric currents, Ia and IB, through Alpha and Beta? A. Ia = 81g B. 8Ia = I8 C. Ia = 4Ig D. 4Ia = I8An electron is fired at a speed vi = 4.3 × 106 m/s and at an angle θi = 39.7° between two parallel conducting plates as shown in the figure. If s = 1.7 mm and the voltage difference between the plates is ΔV = 99.8 V, determine how close, w, the electron will get to the bottom plate. Put your answer in meters and include at 6 decimal places in your answer. Do not include units. The x-axis of the coordinate system is in the middle of the parallel plate capacitor. Round your answer to 6 decimal places.