Sprint 11:59 AM 53961 --+ × 226 test 3 fall 2017.docx 8) Faraday\'s Laws are imp

Question

Sprint 11:59 AM 53961 --+ × 226 test 3 fall 2017.docx 8) Faraday's Laws are important why? 9) The critical angle is important in which modern day application? 10) Why does Snell's Law focus only deal with non- metallic surfaces? 11) A capacitor will store energy in its magnetic field a) True b) False 12) In a solar panel, what is forced to move to producea small emf a) neutron b) photon c) electron d) proton e) hole 13) Where does the back emf come from? 14) In an inductor, it is said that the current leads the voltage by a phase of 90 a) True b) False c) They are the same 15) In an electric generator, there will be two different forms of emf a) True b) False 16) What can you learn by using the Right Hand Rule? open with Print

Explanation / Answer

Q8. Faraday's laws are important because they help to calculate the flux and induced emf so that all the apparataus can be designed either to counter the induced emf or aiding the formation of induced emf depending on the case.

Q9. The critical angle is important in today's optical fibre appliation

Q10. Snell's law deals with the phenomenon of refraction and the refraction can not be possible through the metallic surface.

Q11. A capacitor will store energy in the electric field. So answer is false.

Q12. Small emf can be produced by charge difference and the same is possible by motion of electrons. So answer is electron.

Q13. Back emf comes from induced emf as described by faraday's law.

Q14. Since the current lags the voltage in an inductive circuit., so answer is false.

Q15. In an electric generator there is only one emf. so answer is False

Q16. The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, F, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.

all the best in the course work.

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