Name: 
 

High School Physics - Lesson 7 - Practice Problems - Electric Phenomena


Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
A 20-ohm resistor has 40 coulombs passing through it in 5.0 seconds. The potential difference across the resistor is _____.
a.
160V
c.
100V
b.
8.0V
d.
200V
 

 2. 
The diagram below shows the current in a segment of a direct current circuit.

mc002-1.jpg
What is the reading of ammeter A? _____
a.
5A
c.
8A
b.
1A
d.
7A
 

 3. 
Which circuit segment has an equivalent resistance of 6 ohms?


a.
mc003-1.jpg
c.
mc003-3.jpg
b.
mc003-2.jpg
d.
mc003-4.jpg
 

 4. 
The diagram below represents a series circuit containing three resistors. What is the current through resistor mc004-1.jpg? _____
mc004-2.jpg
a.
1.0 A 
c.
0.33 A
b.
9.0 A
d.
3.0 A 
 

 5. 
In the circuit diagram below, ammeter A measures the current supplied by the 10-volt battery. The current measured by ammeter A is _____.
 
mc005-1.jpg

a.
2.0A
c.
4.0A
b.
0.50A
d.
0.13A
 

 6. 
In the circuit shown below, voltmeter mc006-1.jpg reads 80 volts. What is the reading of voltmeter mc006-2.jpg? _____
mc006-3.jpg

a.
20V
c.
40V
b.
80V
d.
160V
 

 7. 
What kind of diodes are used for number displays? _____
a.
EDL diodes
c.
Light Emitting Diodes (LED's) 
b.
DEL diodes
d.
LCD diodes
 

 8. 
What is the current of a circuit that has 3 V and 0.5 ohm of resistance?
a.
4 A
c.
6 A
b.
5 A
d.
7 A
 

 9. 
When you send an e-mail, you use how many transistors in the process? _____
a.
Several billion
c.
Several hundred
b.
Several thousand
 

 10. 
What is the current on X, Y, and Z? (resistance on X, Y, and Z are same)
mc010-1.jpg
a.
7A
c.
8A
b.
10A
d.
9A
 
 
R1 = 1.2
 
R2 = 0.8
 
R3 = 18
 
U01 = 6 V
 
U02 = 4 V
nar001-1.jpg
 

 11. 
Using the diagram and data above, determine I and U3:
a.
I = 0.3 A; U3 = 1.2 V
c.
I = 0.6 A; U3 = 1.9 V
b.
I = 0.5 A; U3 = 1.8 V
d.
I = 0.2 A; U3 = 1.8 V
 

 12. 
Which two of the resistor arrangements shown in the circuits below have equivalent resistance?
mc012-1.jpg
a.
B and C
c.
A and B
b.
D and A
d.
C and D
 



 
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