a B
As shown in the figure below, a circular ring with a radius of a is folded along a line across the diameter so that the two semicircles are perpendicular. In the magnetic field, this ring was rotated at a constant
(1) Give a qualitative explanation of what will happen.
(2)Find the current flowing through the ring.
(3)What torque should be applied to the ring to allow it to rotate at a constant angular speed?
(4)What do you have to do to turn it N round?
(5) What energy changes from ring to heat?
(6) How much energy changes from ring to heat?
* I'll be so thankful and satisfied to get answer just least 3 of 6 questions..
Hello. Since you have posted multiple questions and not specified which question needs to be solved, we will solve the first question for you. If you want any other specific question to be solved then please resubmit only that question or specify the question number.
1.
As the ring starts to rotate, the magnetic flux starts changing which in turn gives rise to a voltage. The resistance of the ring is R, there will be a current flow.
2.
Magnetic flux is given by
Voltage induced:
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