Really confused here Why is the answer A? Physics 2020, Fall 2017 6. A coil of w

Question

Really confused here

Why is the answer A?

Physics 2020, Fall 2017 6. A coil of wire carrying a current I can freely move or rotate about an axis in a magnetic field. If the coil is released from the position shown, what will happen? Lab 12 Exam 3 - Review page 3 of 10 A. The coil will rotate, the right side will move out of the page. B. The coil will rotate, the left side will move out of the page. C. The coil will oscillate from left to the right and back. D. The coil will move up. E. The coil will move down. axis

Explanation / Answer

The direction of maximum magnetic force acting on right wire is out of the page and force acting on

Left wire is into the page these forces constitute torque,so right wire move out of the page and left wire move

Into the page.To know direction of magnetic force use flemings left hand rule.take fore finger of leftt hand

In the direction of magnetic field, central finger in the direction of current then thumb represents force.stretch fingers as mutually perpendicular to each other.

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