The horizontal component of the earth's magnetic field at a certain place is 3.0 x 10 t and the direction of the field is from the geographic south to the geographic north. A very long straight conductor is carrying a steady current of 1
a. What is the force per unit length on in when it is placed on a horizontal table and the direction of the current is (a) east to west, (b) south to north sol. :
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Answer: b south to north
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