Exam3_2003Spr

# Exam3_2003Spr - Physics 8.02 TEST 3 MASHUP PLEASE DETACH...

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Physics 8.02 TEST 3 MASHUP Spring 2003 PLEASE DETACH THIS SHEET AND USE AT YOUR CONVENIENCE Some (possibly useful) Relations: F = 1 4 πε o q 1 q 2 r 2 E = q 4 o r 2 ˆ r observer to source from points r ˆ = surface closed o inside Q ε dA E outside to inside from points dA = = b a a b b to a from moving V V V ds E j i q q U ij j i o j i = ∑∑ , 4 2 1 r r C Q V U = 1 2 C V 2 = Q 2 2C d A o plate parallel κ = C τ = RC V = i R L L R A A ρ σ == P joule = i V = i 2 R = V /R 2 2 ˆ 4 o q r µ π × = vr B 2 ˆ 4 o I r × = ds r dB F = q v × B ext ext I = × dF ds B ττ = µµ × B NIA = through o I = ds B = dA B ds E dt d ε = N d φ B dt L = N B i ε = L di dt = 0 dA B / L R = U L = 1 2 L i 2 u B = | B | 2 2 0 T = 2 π ω = 1 f if ε (t) = ε m sin( ω t ), then i (t) = i m sin( ω t - φ ), where i m = ε m R 2 + ω L – 1 ω C 2 1/2 and tan φ = ω L – 1 ω C R

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8.02T 1 Problem 1: Four Conceptual Questions (25 points) Circle your choice for the correct answer to the four questions below. A. The graph shows the current versus the voltage in a driven RLC circuit at a given driving frequency. In this plot 1. The current leads the voltage by about 45 degrees. 2. The current lags the voltage by about 45 degrees 3. The current and the voltage are in phase 4. The current and the voltage are about 90 degrees out of phase B: An ideal battery is hooked to a light bulb with wires. A second identical light bulb is
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## This test prep was uploaded on 04/07/2008 for the course 8 8.02 taught by Professor Hudson during the Fall '07 term at MIT.

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Exam3_2003Spr - Physics 8.02 TEST 3 MASHUP PLEASE DETACH...

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