Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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need help on 3Q A1 & B1 & C1

(a) In Figure 1.1, determine
(1)
the current Is,
(ii)
the voltage Va
(iii) the power dissipated in resistor R₁,
(iv)
the energy consumed in the resistor R₁ in 45 minutes. Give the energy in
joules and kWh.
4 V
1₁
R₁
30 02
V₂
R₂
592
ww
Figure 1.1
R₂
1592
ww
(c)
32 V
For the circuit shown in Figure 3.3, determine the currents Is and 12
(0)
(ii)
when the switch SW is opened,
when the switch SW is closed.
SW
R₁
2 k
R₂
2 ΚΩ
1₂
R₂
1kQ
Figure 3.3
R₁
§ 2.2 ΚΩ
E = 80 V
Is
(b)
Refer to the circuit in Figure 1.2.
(0)
Using Kirchhoff's Voltage Law, write down the branch equations for Loop
abefa and Loop bcdeb.
Using Kirchhoff's Current Law, write down the equation at node 'e'.
You do not have to solve the equations in part (i) and (ii).
15 V
a
1₁
f
17 Ω
ww
33 2
ww
b
47 ΩΣ
8 V
e
Figure 1.2
Is
2352
ww
2V
1₂
с
Σ12 Ω
d
expand button
Transcribed Image Text:(a) In Figure 1.1, determine (1) the current Is, (ii) the voltage Va (iii) the power dissipated in resistor R₁, (iv) the energy consumed in the resistor R₁ in 45 minutes. Give the energy in joules and kWh. 4 V 1₁ R₁ 30 02 V₂ R₂ 592 ww Figure 1.1 R₂ 1592 ww (c) 32 V For the circuit shown in Figure 3.3, determine the currents Is and 12 (0) (ii) when the switch SW is opened, when the switch SW is closed. SW R₁ 2 k R₂ 2 ΚΩ 1₂ R₂ 1kQ Figure 3.3 R₁ § 2.2 ΚΩ E = 80 V Is (b) Refer to the circuit in Figure 1.2. (0) Using Kirchhoff's Voltage Law, write down the branch equations for Loop abefa and Loop bcdeb. Using Kirchhoff's Current Law, write down the equation at node 'e'. You do not have to solve the equations in part (i) and (ii). 15 V a 1₁ f 17 Ω ww 33 2 ww b 47 ΩΣ 8 V e Figure 1.2 Is 2352 ww 2V 1₂ с Σ12 Ω d
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