A circuit element having terminals a and b has v a b = 10 V and i b a = 2 A . Over a period of 20 seconds, how much charge moves through the element? If electrons carry the charge, which terminal do they enter? How much energy is transferred? Is it delivered to the element or taken from it?
A circuit element having terminals a and b has v a b = 10 V and i b a = 2 A . Over a period of 20 seconds, how much charge moves through the element? If electrons carry the charge, which terminal do they enter? How much energy is transferred? Is it delivered to the element or taken from it?
A circuit element having terminals a and b has
v
a
b
=
10
V
and
i
b
a
=
2
A
. Over a period of 20 seconds, how much charge moves through the element? If electrons carry the charge, which terminal do they enter? How much energy is transferred? Is it delivered to the element or taken from it?
R1
ww
+
R3
15+
www
R2
R4
ww
With the circuit diagram shown above and the values of the circuit elements listed below, find i1, 12, v1, and v2.
Is = 10A, R1 = 7 ohms, R2 = 9 ohms, R3 = 7 ohms, R4 = 8 ohms
(a) i1 = Number
A
(b) 12 = Number
A
(c) v1 = Number
V
(d) v2 = Number
V
15
ww
22
R2
ли
i4
1+
V4
R1
ww
R3
Solve for current i4 using superposition where R1 = 902, R2 = 36052, R3 =
360 V, and 15 = 5 A.
27052, V4 =
i4 due to voltage source (V4) alone:
Number
A
i4 due to current source (15) alone: Number
A
i4 = Number
PV
Array
Va
DC/DC
Converter
Control
Circuit
ис
V R
Fig. 2. Principle of using DC/DC converter to implement electronic load [2]
4.5
1.5
-0.5
SEPIC
Converters in SOM
0 0.2 0.4 0.6 0.8
Time
SEPIC
Converters in SOM
M
0 0.2 0.4 0.6 0.8
Time
Current
I-V Curve
(a)
8888888
P-V Curve
0 20 40 60 80
Voltage
0 20 40 60
Voltage
80
(b)
Fig. 3. Experimental results of I-V and P-V curves [2]
Chapter 1 Solutions
Electrical Engineering: Principles & Applications, Student Value Edition Plus Mastering Engineering with Pearson eText -- Access Card Package (7th Edition)
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