A coil lies flat on a level table top in a region where the magnetic field vector points straight up. The magnetic field suddenly disappears

Question

A coil lies flat on a level table top in a region where the magnetic field vector points straight up. The magnetic field suddenly disappears. When viewed from above, what is the direction of the induced current in the coil as the field disappears?

a) clockwise
b) counterclockwise
c) clockwise initially, then counterclockwise before stopping
d) there is no induced current in this coil because the field is gone

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Mít Mít 3 years 2021-07-26T17:17:53+00:00 1 Answers 39 views 0

Answers ( )

  1. minhkhoi
    0
    2021-07-26T17:19:18+00:00
    Reply

    Answer:

    a) counterclockwise

    Explanation:

    The Lenz’s Law establish that the direction of the induced current is in an opposite direction, in comparison with the change od the magnetic flux.

    \epsilon=-\frac{d\Phi_{B}}{dt}

    Specifically, if the flux decreases the induced current is in a counterclockwise direction, if increases, the direction is in a clockwise direction.

    HOPE THIS HELPS!!

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