2006 EES 512 Midterm

2006 EES 512 Midterm - (1) Giventhreeresistors Rr = 40 Q...

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(. (1) Given three resistors + Rr = 40 Q rated 0.5 W Rz 20 O rated 1.5 W Rs= 10 O rated 1.0 W (a) \Mat is the largest voltage V, that can be safely applied to the series combination of these ? (b) What is the largest current It that can be safely passed through the series combination of these ? (c) What is the largest voltage V, that can be safely applied to the Erallel combination ? (d) \Mat is the total equivalent resistance of the parallel combination of the three ? (e) lf resistor R, dissipates 1.5 J of energy in 3 seconds, what the voltage V, applied across this resistor ? \12 I ( o') c) (d.) (r i ^(-. 7''.'R=) 13 ,1, l,= o-,r) A ,';: o.?)qn ,r\ k,. .:. '-1- L/. t>- vt: .: r11", ) : e./,)(7,)):-\rr-,_].g-.r V\ (t l/' -\ '- n - , ,' ,ft- , u,-- {.{ t v. 'y, ': 5- 18v. Vr . 3. rrrt/ \ fr-: ('-l o .,r, - i- \.. ,'r ,,2 ', lt: r,f";:1.)lJ\ i o- Itf t - - A {,.r 3> ^ L/(e)w vr r_ | . I f T') V,t lrt, 'rl Vt= i16V I (a) (b) ='i!; {'6'l L (c) (d) Attach propor units I (1 point each) Vs ).9,,{ V ls= CttlA vp= 3,1(V 7 Rrzo= 5-f (Sr- Yz= 3. ttr V (e) RyeHub.CoM
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B (2) ln the circuit shown, the ideal ammeter reading is 10 mA. Find the quantities indicated below. (cross-check all your answers !) 40 ko _R5 6ko lgr 'to ro l :t ,l { R, 3 (Z ru [' R,1 1,.- - | <{ z.a-t -r.
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2006 EES 512 Midterm - (1) Giventhreeresistors Rr = 40 Q...

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