oldexam_pdf - pulat(fap294 – oldmidterm 02 – turner...

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Unformatted text preview: pulat (fap294) – oldmidterm 02 – turner – (56725) 1 This print-out should have 19 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A capacitor network is shown in the following figure. 14 . 7 V 5 . 32 μ F 8 μ F 12 . 9 μ F a b What is the voltage across the 8 μ F upper right-hand capacitor? Answer in units of V. 002 (part 1 of 2) 10.0 points A coaxial cable with length ℓ has an inner conductor that has a radius a and carries a charge of Q . The surrounding conductor has an inner radius b and a charge of- Q . Assume the region between the conductors is air. The linear charge density λ ≡ Q ℓ . ℓ radius = a + Q radius = b- Q b What is the electric field halfway between the conductors? 1. E = λ 2 π ǫ r 2 2. E = Q 2 π ǫ r 2 3. E = Q π ǫ r 2 4. E = λ π ǫ r 2 5. E = λ 2 π ǫ r 6. E = Q 2 π ǫ r 7. E = Q π ǫ r 8. E = λ 4 π ǫ r 9. E = Q 4 π ǫ r 10. E = λ π ǫ r 003 (part 2 of 2) 10.0 points What is the capacitance C of this coaxial cable? 1. C = k e ℓ ln parenleftbigg b a parenrightbigg 2. C = ℓ 2 k e ln parenleftbigg b a parenrightbigg 3. C = ℓ 2 k e 4. C = 2 ℓ k e ln parenleftbigg b a parenrightbigg 5. C = ℓ a 2 k e b 6. C = k e ℓ 2 ln parenleftbigg b a parenrightbigg 7. C = ℓ k e ln parenleftBig a b parenrightBig 8. C = 2 ℓ k e ln parenleftBig a b parenrightBig 9. C = ℓ k e ln parenleftbigg b a parenrightbigg pulat (fap294) – oldmidterm 02 – turner – (56725) 2 10. C = ℓ k e 004 (part 1 of 4) 10.0 points Four capacitors are connected as shown in the...
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This note was uploaded on 10/19/2010 for the course PHY 303L taught by Professor Turner during the Spring '08 term at University of Texas.

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oldexam_pdf - pulat(fap294 – oldmidterm 02 – turner...

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