The most important long question is chapter 14 second year physics.
Faraday’s Law
6. How would changing the radius of loop D shown below affect its emf, assuming C and D are much closer together compared to their radii?
13.2 Lenz’s Law
11. The circular conducting loops shown in the accompanying figure are parallel, perpendicular to the plane of the page, and coaxial. (a) When the switch S is closed, what is the direction of the current induced in D? (b) When the switch is opened, what is the direction of the current induced in loop D?
12. The north pole of a magnet is moved toward a copper loop, as shown below. If you are looking at the loop from above the magnet, will you say the induced current is circulating clockwise or counterclockwise?
13. The accompanying figure shows a conducting ring at various positions as it moves through a magnetic field. What is the sense of the induced emf for each of those positions?
15. State the direction of the induced current for each case shown below, observing from the side of the magnet.
13.3 Motional Emf
13.4 Induced Electric Fields
20. The copper sheet shown below is partially in a magnetic field. When it is pulled to the right, a resisting force pulls it to the left. Explain. What happens if the sheet is pushed to the left?
13.5 Eddy Currents
23. A coil is moved through a magnetic field as shown below. The field is uniform inside the rectangle and zeroes outside. What is the direction of the induced current and what is the direction of the magnetic force on the coil at each position shown?