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Statement of a problem № 10979

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The drawing shows that a uniform magnetic field is directed perpendicularly into the plane of the paper and fills the entire region to the left of the y axis. There is no magnetic field to the right of the y axis. A rigid right triangle ABC is made of copper wire. The triangle rotates counterclockwise about the origin at point C. What is the direction (clockwise or counterclockwise) of the induced current when the triangle is crossing (a) The +y axis, (b) The -x axis, (c) The -y axis, and (d) The +x axis? For each case, justify your answer.




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