PREVIEW WORKSHEET FOR EXPERIMENT E. ELI PowER, KIRCHHOFF S LAWS, THEVENINS THEOR

Question

PREVIEW WORKSHEET FOR EXPERIMENT E. ELI PowER, KIRCHHOFF S LAWS, THEVENINS THEOREM. I. For the situations depicted in the accompanying figures determine the power dissipated in each resistor. 40 4 A 2. For each ofthe situations depicted in problem 1, determine the total energy dissipated in the resistor in 24 hours, in joules. First Circuit: U Second Circuit: U Third Circuit: U 3. Given the circuit shown in the accompanying figure. Using the circuit-solving procedure, including Kircbhoffs loop law, determine V,. 200 5 S2. 450 V 15 n 60

Explanation / Answer

1) P = i2 R = 42 * 20 = 320 W

P = v2 / R = 82 / 4 = 16 W

P = V I = 3 * 20 = 60 W

2) For first circuit 24 hrs = 86,400 s

U = 320 * 86400 = 2.76 * 107 J

For second circuit , U = 16 * 86400 = 1.38 * 106 J

For third circuit , U = 60 * 86400 = 5.18 * 106 J

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