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prk6mt6 - Friday Fehmary 3[995 Possibly useful number Ho =...

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Unformatted text preview: Friday, Fehmary 3, [995 Possibly useful number: Ho = 4:: :It ID'T TmI'A Show all work. 1nitrite neatly. All problems etc of equal value I} A conducting wire is bent as shown; the curved parts are sentinel-tries ofradius s end h respectively. A cutout l flows in the loop as shown. Use the Riot-Seven Law to find the moneticfield vectorEst the pointP. b I. ll- |_-—iI- P i. 5-" 2} Ft conducting wire loop is pulled through a region of constant magnetic field; the field is directed into the page, as shown. a] Is there an. induced current 1ilrherl. the loop is not yet t:tttnt'tlrelellgpr inside the B field? Eyes, in 1tluhich direction? b} Is there an induced current when the loop is Ieon:I.pl.etueltllI inside the B field? It'yes, in which direction? e} Is there an induced current when the loop is partiallyr out ofthe B field? Il'ses+ in which direction? a f. Ii]. hill a; it is 's 's a. 1: 1"- at a: x dig—la it al. l I i l ‘| is s x%! d} 3} A current 1 = .ti A flows in a very long, straight wire which is fised so that it cannot move. at second long. straight wire is located tilts-atoll}r above; this wire is he to more 1I-rel'ticall}r but not horizontally- If the upper wire has mass per unit length equal to 313' gram: per meter, find the direction and magnitude of“ the current in the upper who so that it will he mspeoded 4 on above thelewerwire. {95"}; so I #PI 4} A conducting pipe of inner radius a and outer radius It carries a uniihnn current ]. What current flows in the region defined by a radius r, where a I: r s: it? fl _. _r—I—'_ 5] A conducting rod of resistance 3. mass M and length L slides without friction down parallel conducting tells of negligible resistance as shown. The rails are cemented at the hottunt so that the rails and rod together form a conducting loop. The plane of the rails makes an angle H with the horizontal. and a uniform. set-tics] magnetic field E exists tluoughout the entire region. Show that the rod acquires a terminal velocity given by transmits} ...
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