Determine the magnetic field strength
A wire carrying 12 A makes a 26 angle with a uniform magnetic field. The magnetic force per unit length of wire is 0.28 N/m . What is the magnetic field strength?
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A charge q1 = 5 nC is placed at x = 0 and another charge q2 = -2 nC is placed at x = 2 .0 cm. Where should a third positive charge be placed on the x axis so that the net force on it is zero?
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