Question

Problem 1. In the circuit diagram shown currents $I_1$, $I_2$, and $I_3$ are unknown. Use the conventional direction of currents shown when answering the questions below. No mesh analysis! $I_1$ $I_2$ a f $\text{WWW}$ 8.0 ? $\text{WWW}$ 6.0 ? b $I_3$ 12 V 18 V c d 3.0 ? A) Which side of the 8 ? resistor is at higher potential, a or f? Why? B) Write Kirchhoff's current law for node c. C) Write Kirchhoff's voltage law for loops adefa and abcda (clockwise). D) Suppose that after solving for $I_1$, $I_2$, and $I_3$, you find $I_1$ = -2A. Explain what this result means. Problem 2. In figure, $R_1$ = 5.00 ?, $R_2$ = 8.00 ?, and $R_3$ = 4.00 ?. The battery has negligible internal resistance. The current $I_2$ through $R_2$ is 5.00 A. A) What is the current $I_1$ through resistor $R_1$? B) What is current $I_3$ through resistor $R_3$? C) What is the emf of the battery? $R_1$ $R_2$ $R_3$

          Problem 1.
In the circuit diagram shown currents $I_1$, $I_2$, and $I_3$ are unknown. Use the conventional direction
of currents shown when answering the questions below. No mesh analysis!
$I_1$
$I_2$
a
f
$\text{WWW}$
8.0 ?
$\text{WWW}$
6.0 ?
b
$I_3$
12 V
18 V
c
d
3.0 ?
A) Which side of the 8 ? resistor is at higher potential, a or f?
Why?
B) Write Kirchhoff's current law for node c.
C) Write Kirchhoff's voltage law for loops adefa and abcda
(clockwise).
D) Suppose that after solving for $I_1$, $I_2$, and $I_3$, you find $I_1$ = 
-2A. Explain what this result means.
Problem 2.
In figure, $R_1$ = 5.00 ?, $R_2$ = 8.00 ?, and $R_3$ = 4.00 ?. The battery
has negligible internal resistance. The current $I_2$ through $R_2$ is
5.00 A.
A) What is the current $I_1$ through resistor $R_1$?
B) What is current $I_3$ through resistor $R_3$?
C) What is the emf of the battery?
$R_1$
$R_2$
$R_3$

Problem 1.
In the circuit diagram shown currents I1, I2, and I3 are unknown. Use the conventional direction
of currents shown when answering the questions below. No mesh analysis!
I1
I2
a
f
WWW
8.0 ?
WWW
6.0 ?
b
I3
12 V
18 V
c
d
3.0 ?
A) Which side of the 8 ? resistor is at higher potential, a or f?
Why?
B) Write Kirchhoff's current law for node c.
C) Write Kirchhoff's voltage law for loops adefa and abcda
(clockwise).
D) Suppose that after solving for I1, I2, and I3, you find I1 =
-2A. Explain what this result means.
Problem 2.
In figure, R1 = 5.00 ?, R2 = 8.00 ?, and R3 = 4.00 ?. The battery
has negligible internal resistance. The current I2 through R2 is
5.00 A.
A) What is the current I1 through resistor R1?
B) What is current I3 through resistor R3?
C) What is the emf of the battery?
R1
R2
R3

Added by Juan Jos- O.

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