A plane parallel plate capacitor has plates of 10 cm

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50. A plane parallel plate capacitor has plates of 10 cm 2 area that are 1.0 mm apart. At an instant when charge is being accumulated on the plates at a rate of 12 nC/s, the displacement current between the plates is a. . A A A 10 85 . 8 9 × 10 06 1 16 × . b. . 10 2 1 8 × . c. . d. 1.00 A. e. 1.36 A. 51. A metal rod of length L in a region of space where a constant magnetic field points into the page rotates clockwise about an axis through its center at constant angular velocity ω . While it rotates, the point(s) at highest potential is(are) A B C D E 52. A metal rod of length L in a region of space where a constant magnetic field points into the page rotates clockwise about an axis through its center at constant angular velocity ω . While it rotates, the point(s) at lowest potential is(are) A B C D E
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Faraday’s Law 203 53. A metal rod of length L in a region of space where a constant magnetic field points into the page rotates about an axis through its center at constant angular velocity ω . The ends, A and E, make contact with a split ring that connects to an external circuit. The current in the external circuit of resistance R has magnitude A B C D E d R B Φ 1 . d R B Φ 2 . d R B Φ 2 . d R B Φ 2 2 . 54. Two bulbs are shown in a circuit that surrounds a region of increasing magnetic field directed out of the page. When the switch is closed, Bulb 1 Bulb 2 Switch B a. bulb 1 glows more brightly. b. bulb 2 glows more brightly. c. both bulbs continue to glow with the same brightness. d. bulb 1 goes out. e. bulb 2 goes out. 55. Two bulbs are shown in a circuit that surrounds a region of increasing magnetic field directed out of the page. When the switch is closed, Bulb 1 Bulb 2 Switch B
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204 CHAPTER 31 56. Two bulbs are shown in a circuit that surrounds a region of increasing magnetic field directed out of the page. When the switch is open, Bulb 1 Bulb 2 Switch B 57. As shown below, a square loop of wire of side a moves through a uniform magnetic field of magnitude B perpendicular to the page at constant velocity G v directed to the right. Judd says that the emf induced in the loop is zero. Roger claims that it has magnitude B A v . Which one, if either, is correct, and why? G v
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Faraday’s Law 205
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  • Spring '11
  • Legg
  • Physics, Magnetic Field, uniform magnetic field

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