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- Q2) If the electron concentration increase along the x-axis of a conductor as shown in equation below: n=1028+5x1030x+4x1033x2 And the electron diffusion constant is 1.2×10*m²/s. Find the diffusion current density at x = 5mm. (3 marks)Problem 5: A nichrome rod of length LN 58 cm is connected in series (end to end) to a carbon rod of length Lc 8 cm. Both rods have cross-sectional areas of A 55 mm2. At T0 20° C the restístivity of nichrome is ρΝ-1.50 x 10-6 Ω-m and the resistivity of carbon is pc 3.50 x 10-5 Q-m. The temperature coefficient of nichrome is positive with value a-0.4 x 10-3 °C-1. The temperature coefficient of carbon is negative with a value ac--0.5 x 10-3 °c1. The nonlinear dependence of the resistivity on temperature T can be written as ρ ea(T-To) .odu @ theexpertta.com - tracking id: 2N74-2F-82-4A-BAAB-13167. In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. A Part (a) Write an expression for the total resistance of the nichrome-carbon combination as a function of temperature in terms of quantities given in the introduction. Simplify your answer as much as…Conduc-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 choice
- 1%70 ll. I. quiz.pdf Group A Let J=10y²zax – 2x²yay+2x²zāz a) The total current crossing the surface y=2, 1An electric current of intensity l=5 A flows through a 12-gauge copper wire (diameter D=2.05mm) and a light bulb. The electron density of copper is n=8.5x1028 electrons per cubic meter. (e¯ = -1.6x10-¹⁹) 1) II) 33. Find the number of electrons that pass through the bulb in each second. Find the electric current density J (in A/m^2) on the wire. Find the drag velocity or drift of the electrons in the wire. If we double the diameter of the wire section, which of the above calculated quantities changes?a) If the electron concentration increase along the x-axis of a conductor as shown in equation below: n= 3. 10"x + 2. 10"x + 1020 And D = 1.2 x 10-m/s. Find the diffusion current at x = 5mm?An 18 gauge copper wire (diameter 1.02 mm) carries a currentwith a current density of 3.20 * 10^6 A/m2. The density of freeelectrons for copper is 8.5 * 10^28 electrons per cubic meter. Calculate(a) the current in the wire and (b) the magnitude of the drift velocity ofelectrons in the wire.HW1 When a current of 2 A flows for 3 micro-seconds in a coper wire, estimate the number of electrons crossing the cross-section of the wire. Hint : With 2 A for 3 u Sec, charge transferred = 6 u-coulombs (Bombay University, 2000) 1 Add fileCheck Your Understanding Why is the potential energy associated with the exclusion principle positive in Example 9.1?A 10-gauge copper wire has a cross-sectional area A=5.26mm2 and carries a current of I=5.00A . The adensity of copper is =89.50g/cm2 . One mole ofcopper atoms (6.021023atoms) has a mass ofapproximately 63.50 g. What is the magnitude of the drift velocity of the elections, assuming that each copper atom contributes one free electron to the current?HW/2 0, If the switch in Fig. 10 opens at 1 , find v(7) for 7 = 0 and we(0). Answer: 8¢V, 533 1. =0 UV P: A conductive wire has a resistivity of (0.649x10-8(2.m)) at room temperature are (5.8x10- ) conduction electron/ms.Calculate the mobility, resistivity and relaxation time of electrons. Ql:SEE MORE QUESTIONS