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Given B= (10/r)i+( rcos θ) j+k in spherical coordinates. Find Cartesian points at (-3,4,0)(a) -2i + j(b) 2i + k(c) i + 2j(d) –i – 2kThe question was posed to me during an online exam.The query is from Spherical Coordinate System topic in section Coordinate Systems and Transforms of Electromagnetic Theory |
Answer» CORRECT option is (a) -2I + j Explanation: R = √(x^2+y^2+z^2) = √25 = 5 Θ = cos^-1(z/r) = 1 Φ = tan^-1(y/x) = tan^-1(-4/3) Thus, B = -2i + j. |
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