PHS 212 Final, Spring 2000

[2 . Ce NDU PHS 212-Electricity and Magnetism Faculty of Natural and Applied Sciences Fiypai! ( Exam- Spring 2000 Department of Sciences Duration: 2 hours lnstructor: Dr. Roger Haijar Calculators and two cheat sheets areallowed, Solve all problems. Fee A plane sleb of thickness d has a Sy” clectric field at all points in space b a putside the slab, in terms of x, the 3 distance measured from theme How long does it take eurrentis 115A ¢ > and tength $5.5 | You have 2 506% keep the bulk - Cshould you , 110 ¥ light bulb, which you want to plug into a 440-¥, 5m barning out, you plan to connect it in series with a cay 2 5. In the figure, the voltmeter is connected the sliding contacls at the periphery and disk hae radius # and rotates at an 4 uniform magnetic field B is fRat there is an emf between voltmeter reading is ¥ = 5oeB- and Q is positive? Pou = 8.94 * 10? ket? mupiar MASS Mey = 63.5 g. ‘2. Find the capacitance of a metallic sphere of radius 10 cm uniformly coated with a 5 cm thickness of polypropylene of dielectric constant 2.3. ig/ In agiven Hal! cxpcriment invalving Zinc, a 10.38 A siteenk aM through a 25 pm thick foil and 2.55 cm wide. A positive Hall voltage of 0.71 10°* ¥ is measured when the magnetic field is 500 mT: Find the density and me speed of charge carriers in Zinc. ochergeroonducting apbens of onknown di ae place erge distance from each seins conned tra Giclee ate o 400 V and -400 V. They of the spheres is 100 V. Find