gonzales (pag757) – Homework 7 – Hoffmann – (56745)
1
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printout
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have
12
questions.
Multiplechoice questions may continue on
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before answering.
001
10.0 points
The emf of a battery is
E
= 19 V
.
When the
battery delivers a current of 0
.
7 A to a load,
the potential difference between the terminals
of the battery is 17 V volts.
Find the internal resistance of the battery.
Answer in units of Ω.
002
10.0 points
Four copper wires of equal length are con
nected in series.
Their crosssectional areas
are 0
.
8 cm
2
, 2
.
5 cm
2
, 1
.
3 cm
2
, and 7 cm
2
.
If a voltage of 142 V is applied to the ar
rangement, determine the voltage across the
2
.
5 cm
2
wire.
Answer in units of V.
003
10.0 points
Four resistors are connected as shown in the
figure.
21 Ω
52 Ω
88 Ω
94 V
37 Ω
S
1
a
b
c
d
Find the resistance between points
a
and
b
.
Answer in units of Ω.
004
10.0 points
Find the equivalent resistance of the circuit
shown in the figure.
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 Spring '08
 Turner
 Work, Resistor, Electrical resistance, Electrical impedance, Voltage drop, Gonzales

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