931_Physics ProblemsTechnical Physics

931_Physics ProblemsTechnical Physics - 272 Alternating...

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272 Alternating Current Circuits P33.25 X fC C == × 1 2 1 26 0 0 2 0 01 0 133 10 12 8 π .. . Hz F af ej Z I V Z VI R + × × × × × = 50 0 10 1 33 10 1 33 10 5000 377 10 500 10 188 3 2 8 2 8 5 53 . . . V 1.33 10 A A V rms rms 8 rms body rms body ΩΩΩ ∆Ω bg e j P33.26 X C C × = 11 25 0 06 5 0 49 0 6 ω . XL ZR XX I V Z L LC × = =+ = +− = = ωπ 0 8 51 0 5 8 1 40 0 58 1 49 0 41 0 150 41 0 366 3 2 2 22 . . max a f A max (a) VIR R = max . 366 40 146 a f V (b) VIX LL = = max . 366 581 2125 212 V (c) CC max . 3 66 49 0 179 1 179 V V (d) ∆∆ VV −= = 212 5 179 1 33 4 ... V FIG. P33.26 P33.27 R = 300 L F H G I K J = 2 500 0200 200 1 s H . a f X C C F H G I K J × L N M O Q P = −− 1 2 500 11 0 10 90 9 16 1 F = 2 2 319 and φ = F H G I K J tan . 1 20 0 R X L = 200 X C = 90.9 R = 300 Z { X L - X C = 109 FIG. P33.27 *P33.28 Let X c represent the initial capacitive reactance. Moving the plates to half their original separation
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