Waves Practice Problem Set Worksheet Page 44
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47M
P
P
S
41
ECHANICS
RACTICE
ROBLEM
ETS
12. A standard 100-W incandescent light bulb has a filament made out of tungsten. At
room temperature (20°C), the tungsten filament has a resistance of 15 Ω. When
the light bulb operating with a wall voltage of 120 V, it gets hot. What is the
temperature of the filament when it is hot? The temperature coefficient of tungsten
-1
is 0.0044°C
.
Answer: 1975°C
13. Find the equivalent resistance and the current through the battery for each of the
following combination circuits.
a. R
= 27.1 Ω; I
= 4.4 A
eq
B
10 Ω
25 Ω
30 Ω
15 Ω
40 Ω
120 V
20 Ω
b. R
= 128.8 Ω; I
= 0.93 A
eq
B
120 V
Gamzon & Gregorian-Michaelsen
6/7/16
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education