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Magnetic Field Lines Form Closed Loop

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what is current loop?

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0.5 A

current is flowing in a loop of area

0.25 m^{2}

. What will be the magnetic moment of this loop?

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

Q. Assertion :If current decreases in a loop placed parallel and co-axially with other loop without current, they attract each other. Reason: Direction of induced current in the second loop is in same direction as in current carrying loop.

Q. A loop of wire carries a current in counter clockwise direction. What is the direction of the magnetic field inside the loop?

Q. Two circular, similar, coaxial loops carry equal currents in the same direction. If the loops are brought nearer, what will happen?

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Magnetic Field Lines Form Closed Loop

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