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Given,
There are 6.022×10^23 charge carrier in one mole of electron
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- 1 %VY lI. A 9:1. د المرحلة الأولی B.docx الجامعة المستنصرية كلية العلوم / قسم الفيزياء المرحلة الأولي B Q6:Two equal positive charges q.= q.=2x10 C interact with a third charge q-4x10°C. Find the magnitude and direction of the resultant force on q.. 30cm 40cm Q2:Find the electric field at point p as shown in the figure if q. = 2µC, q = -8µC and q = 12µC. 50cm 12C S0cm S0cm ...Q4) Attempt to answer ONE branch only: a) If the electron concentration increase along the x-axis of a conductor as shown in equation below: n = 3 + 1030x² + 2 + 1028x + 1026 And D = 1.2 x 10-ª m² /s. Find the diffusion current at x = 5mm?z Q. 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'. Where L is the separation distance of the L 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 y N
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