PHYS 102 Lecture Notes - Lecture 22: Angular Frequency, Magnetic Flux, Provatas

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1 May 2016
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Question 7: the area of a circular loop is changing in a uniform magnetic field as shown in the figure. What is the direction of the induced magnetic flux and the induced current in the loop? o: flux will go into the page (compensate for the loss of flux) and induced current in clockwise direction (compensation) Question 8: a conducting loop moves into an uniform magnetic field as shown. What is the direction of induced flux and induced current? o: flux will go out of the page and the induced current in ccw direction, this is because the flux is increasing as the loop enters the field. Question 9: figure below shows a circular conducting loop falling toward a wire carrying a current to the left. What is the direction of the induced current in the loop of wire? o: ccw, flux increases into loop as ring fails; drop the string, spike in voltage as it falls.

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