Class Management Help Chapter 21-22A Homework Begin Date: 6/29/2017 12:00:00 AM

Question

Class Management Help Chapter 21-22A Homework Begin Date: 6/29/2017 12:00:00 AM -- Due Date: 7/5/2017 11:59:00 PM End Date: 8/3/2017 12:00:00 AM (11%) Problem 4: Consider the circuit in the diagram, with sources of emf listed below. 0.10 Randomized Variables 8121 V 82= 43 v 83 = 4.5V Ri 5.0 20 0.50 40 4= 46V 0.20 i 0.05 h ©theexpertt 3390 Part (a) Find 11 in amps. Grade Summa Potential sinO cotan0asin acos0 atan0 acotan sinhO cosh0 tanh cotanhO Submissions Attempts rema (0% per attemp cos0 *123 detailed view END Degrees O Radians Submit Hint Hints: 590 deduction per hint. Hints r Feedback: 0% deduction per feedback. 33% Part (b) Find 12 in amps - 33% Part (c) Find 13 in amps

Explanation / Answer

Applying KVL in upper loop:

E1 - 0.10i1 - 20i1 + 40i2 + 0.50i2 - E2 - 5i1 = 0

25.1i1 - 40i2 = -22 ....... (i)

KVL in lower loop:

43 - (0.5 + 50)i2 - (0.2 + 0.05 + 78)i3 - 46 + 4.5 = 0

50.5i2 + 78.25i3 = 1.5 ....... (ii)

Applying KCL:

i3 = i1 + i2

i1 + i2 - i3 = 0 ..... (iii)

Solving all three equations,

i1 = - 0.436 A ........Ans(A)

i2 = 0.277 A ...........Ans(B)

i3 = - 0.16 A .......Ans(C)

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