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Byju's Answer
Standard X
Physics
Magnetic Field Due to Current through a Circular Loop
The back face...
Question

The back face of a circular loop of wire is found to be south magnetic pole. The direction of current in this face of the circular loop of wire will be:

(a) towards south
(b) clockwise
(c) anticlockwise
(d) towards north

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Solution

(b) clockwise
Because clockwise flow of current in a circular loop behaves like south pole.

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Q. The front face of a circular wire carrying current behaves like a north pole. The direction of current in this face of circular wire is:

(a) clockwise
(b) downwards
(c) anticlockwise
(d) upwards
Q.

In the figure shown below, current is flowing in the anticlockwise direction in a loop of wire. The part of the loop that faces towards you is the south pole.


Q. A bar magnet is moved along the axis of a copper ring placed far away from the magnet. Looking from the side of the magnet, an anticlockwise current is found to be induced in the ring. Which of the following may be true?
(a) The south pole faces the ring and the magnet moves towards it.
(b) The north pole faces the ring and the magnet moves towards it.
(c) The south pole faces the ring and the magnet moves away from it.
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Q. A horizontal circular loop carries a current that looks clockwise when viewed from above. It is replaced by an equivalent magnetic dipole consisting of a south pole S and a north pole N.

(a) The line SN should be along a diameter of the loop.
(b) The line SN should be perpendicular to the plane of the loop
(c) The south pole should be slow the loop
(d) The north pole should be below the loop
Q. .
Table 1
Table 2
(a) If current is
increased
(p) Induced current in
loop is clockwise
(b) If current is
decreased
(q) Induced 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
towards the wire
(s) wire will repel the
loop

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