Answer question 5(d) ONLY
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Answer question 5(d) ONLY.
Transcribed Image Text:1. Three resistors of 2 2, 3 Q and 5 Q are connected
in series and a current of 2 A flows through them.
Calculate the p.d. across each resistor and the total
supply voltage.
2. The lamps in a set of Christmas tree lights are con-
nected in series; if there are 20 lamps and each lamp
has a resistance of 25 Q, calculate the total resistance
of the set of lamps, and hence calculate the current
taken from a 230 V supply.
3. Three lamps are connected in series across a 120 V
supply and take a current of 1.5 A. If the resistance of
two of the lamps is 30 Q each, what is the resistance of
the third lamp?
4. The field coil of a d.c. generator has a resistance of
60 Q and is supplied from a 240 V source. Given that
the current in the coil is to be limited to 2 A, calculate
VIn= 100 V
30 Ω
--
70 Ω
Fig. A
7. Three resistors of 6 2, 9 Q and
parallel to a 9 V supply. Calcula
each branch of the network; (b
(c) the total effective resistance o
8. The effective resistance of two 1
parallel is 8 Q. The resistance of
12 Q. Calculate: (a) the resistanc
(b) the effective resistance of tl
the resistance of the resistor to be connected in series
with the coil.
5. Given that VIn is the p.d. of L with respect to N,
calculate, for the circuit shown in Fig. A, the values of:
(a) VAB, (b) VBc (c) Vac, (d) VgN-
6. Given that VNI, is the p.d. of N with respect to L, then,
for the circuit shown in Fig. B, ViN=-50 V. What are
the corresponding values of (a) Vwx, (b) Vyz, (c) Vxw,
(d) Vzw, (e) Vyx?
nected in series.
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