Class Management I Help lectric Circuits homework Begin Date: 3/30/2017 11:00:00

Question

Class Management I Help lectric Circuits homework Begin Date: 3/30/2017 11:00:00 AM Due Date: 4/11/2017 11:59:00 PM End Date: 5/31/2017 12:00:00 AM (6%) Problem 7: Consider the three resistors R 122, R2 36 2, and R 82 2 in the configuration shown in the figure. A potential difference 4v 1.5 Vis applied between A and B. Dtheexpertta.com 11% Part Express the equivalent resistanceRe of the combination of R2 and Ruin terms of R2 and R, Grade Summary Deductions 100% AV 7 8 9 Submissions AV2 Attempts remaining: 20 per attempt) 1 2 3 I give up! Hints deduction per hint. Hints remaining: Feedback deduction per feedback 11% Part d) Express the total resistance R off the combination resistors in terms of Nu.A2 and N 11 Part (e) calculate of all three the numerical value of the total resistance R in 2. ini a 11% Part (d) Express the current Ion Ri in terms of the potential difference Av between A and B and the equivalent resistance R. 11% Part (e) calculate the numerical value of I in A. 11 Part on Express the voltage across R Ave terms of AV, I, and R i 11% part go Express the current I, through R2 in terms of 4v2 and R2. 11% Part (h) Calculate the numerical value A. of 12 in a 11% Part Calculate the numerical value of 1 through R

Explanation / Answer

a) equivalent resistance of Re of combination R2 and R3

R2 and R3 are in parallel Re = [1/36 + 1/82]-1= 25 ohms

b) Rtot = R1 + [R2 R3 / R2 + R3]

= R1R2 + R2R3 + R1R3 / (R2 + R3)

c) Total resistance = Re + R1 = 25 + 12 = 37 ohms

d) current I = delta V / Rtot = delta V * [(R2 + R3)/ R1R2 + R2R3 + R1R3]

e) I = delta V / Rtot = 1.5 / 37 = 0.0405 A

f) delta V2 = delta V1 - I R1

g) I2 = delta V2 / R2

h) I2 = 1.5 - (0.0405*12) / 36 = 0.028 A

I) I3 = I - I2 = 0.0405 - 0.028 = 0.0125 A

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