6. A bar magnet is close to a metal loop. When this magnet is suddenly moved to

Question

6. A bar magnet is close to a metal loop. When this magnet is suddenly moved to the left away from the loop, as shown, a clockwise current is induced in the coil, as viewed by an observer looking through the coil toward the magnet. Which end of the magnet is the north pole? A or CT Which is the south pole? 0% Observer For questions 7 and 8, consider an electromagnetic wave with wavelength 3,00 cm and magne strength 10 0 T tic field 7. (3 pts) What is the frequency of the waves? 8. (3 pts) What is the strength of the electric field? For questions 9 and 10, consider the figure on the right showing the path of a 2.00 gram particle traveling into a region where a uniform magnetic field points into the page. 9. (3 pts) Does the particle have a charge? If so, is it positive or negative? 10. (3 pts) The particle had a speed of speed is 4.00 x 103 m/s before entering the magnetic field. How large is the magnetic force on the particle while it is traveling through the magnetic field if the radius of its path is 20.0 cm?

Explanation / Answer

6

for an observer ,the current is clockwise so direction of magnetic field is outward for him which means north pole is created by coil , then C point of the magnet must be south pole as magnet is moving away from coil.

so definately A is North pole

7

frequency=velocity of light/wavelength=1*10^10 Hz

8

E/B=c

E=Bc=3000 Hz

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