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15 April, 23:20

There is a current I flowing in a clockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L, then the net magnetic force acting on the loop is:

a. 2ILB

b. ILB

c. IBL2

d. Zero

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Answers (1)
  1. 16 April, 00:20
    0
    (d) Zero

    Explanation:

    Given:

    Side of the square, = L

    Magnetic field, = B

    According to Faraday, the net force acting on a conductor is equal to product of magnetic field, current, length of conductor and sine of the angle between the field and current.

    F = BILsinΦ

    Where:

    B is magnetic field

    I is current in the loop

    L is length of the loop

    Φ is the angle between the magnetic field and current

    Φ = 0, since the current and magnetic field are directed in opposite directions.

    F = BILsin (0)

    F = 0

    Therefore, the net magnetic force acting on the loop is zero.

    The correct answer is (d) Zero
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