Question

Question 1: This figure shows a cut through a current-carrying loop, seen from the side. The current comes out of the page at the top and flows into the page at the bottom. At each point indicated by a solid dot, sketch and label a) the magnetic field vector generated by the top of the loop, b) the magnetic field vector generated by the bottom of the loop, and c) the net magnetic field generated by the loop. Question 2: Just as in the case of electric fields, we can start from simple magnetic field configurations and construct more complicated fields using superposition. At each point indicated by a solid dot, sketch and label the magnetic field vectors for the field generated by the loop on the left, for the field generated by the loop on the right, and the net magnetic field vector. 0:

Answer 1

Solution

Please see the attached. In the first case, the magnetic field due to a wire carrying current can be obtained by thumb rule. If you place the wire on your right hand such that thumb points in the direction of current, the curled fingures will give you the direction of magnetic field around it. It will be directed circling around the wire. Compare the diagram I have drawn in the first case with thumb rule as stated, you can find how I got the direction.

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