NEET Physics Moving Charges and Magnetism Questions Solved


The unit vectors i^, j^ and k^ are as shown below. What will be the magnetic field at O in the following figure

                         

(a) μ04πia2-π2j^                               (b) μ04πia2+π2j^

(c) μ04πia2+π2i^                                (d) μ04πia2+π2k^ 

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