Physics

Analyze the following circuit using a VIR chart. 12) Using the information you are

given for the circuit at the right, answer the following. (a) Determine the magnitude and direction of the current in the circuit. (b) Determine which point, A or B, is at a higher potential.

13) Calculate the unknown currents I1, I2, and I3 for the circuit

below.

14) Calculate the unknown currents I1, I2, and I3 for the circuit below.

Given: 15) Calculate the unknown currents I1, I2, and I3 for the circuit

below.

ANSWERS:

NOTE: These answers are minimal since there are checks that you can do to verify your answers.

R1 R2

R3 R4

R5 R6

I1 8 V VB = 50 V

R1 = 9  R2 = 4  R3 = 18  R4 = 4  R5 = 7  R6 = 12 

B

A

17 V

13  7 

5 

11 

23 V

6 

1 

10 V

25 V

3 

5 

7 

I1

I2

I3

4 

9 

10 

4  7 

I2

6 

I3 22 V

3  10 V I1

4 

4  25 V

2  5 

I2 I3

20 V 4 

7) REQ = 8  1) REQ = 2  8) a) 0.923  2) REQ = 11.48  9) REQ = 21  3) REQ = 25  10) REQ = 25  4) REQ = 12.15  11) REQ = 20  5) REQ = 12  12) a) 1.11 A 6) REQ = 40 

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