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A square loop is placed near a long straight current carrying wire as shown in fig. Match the following table. Column – IColumn - II(A) If current is increased,(p) induced current in loop is clockwise(B)If current is decreased(q) included current in loop is anticlockwise(C) If loop is moved away from the wire.(r) wire will attract the loop(D) If loop is moved toward the wire.(s) wire will repel the loop |
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Answer» Correct option (A-q, s), (B-p,s), (C-r), (D-r) Explanation: (p) If current in increased, flux in the loop will increase in inside direction, then due to Lenz‟s law induced emf in the loop will be in anticlockwise direction. Due to this current, the current in the nearer side of loop to the wire will be in opposite direction to that of wire. Hence, there will be repulsion. (q) This situation is opposite to part (p) (r) If loop is moved away, then flux decreases and this becomes similar to part (q) (s) Similar to part (p) |
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