Given B= (10/r)i+( rcos θ) j+k in spherical coordinates. Find Cartesi – McqOptions

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1.	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 – 2k
Answer» B. 2i + k

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