Download FIRST ELECTRICITY TEST REVIEW Fill in the blanks 1 Pushes

FIRST ELECTRICITY TEST REVIEW
Fill in the blanks
1 Pushes electrical charge. Sometimes called electrical potential.
2 This is the unit for resistance to electrical current.
3 Electrical power is measured in
Read
The electric power in watts associated with a complete electric circuit or a circuit component
represents the rate at which energy is converted from the electrical energy of the moving charges
to some other form, e.g., heat , mechanical energy, or energy stored in electric fields or magnetic
fields.
Fill in the blanks
4
Two negative charges will experience a(n) ______________ force between them
_____________ charges are found as electrons in the electron cloud surrounding atomic nuclei.
5
In some electrical circuits, the electrons are pushed back and forth (two directions)
along a conductor. These are called:
6
In some materials, valance electrons are not easily moved from one atom to another.
These materials are called:
7
The electrical charge in a system will remain the same unless charge is added
or removed by an outside source. This is called:
Read
Electrical charge is a property of matter. There are two types of charges.
Positive charges are found as protons in the nucleus of atoms, and as free particles.
Negative charges are found as electrons in the electron cloud surrounding atomic nuclei,
and as free charges.
In some materials, valance electrons are easily moved from one atom to another.
These materials are called conductors.
In some materials, valance electrons are NOT easily moved from one atom to another.
These materials are called insulators.
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Fill in the blanks
A. Slows down the flow of electricity.
B. A short-hand way of drawing electrical circuits.
C. A circuit with a break in it; no electricity will flow.
D. Pushes electricity through a circuit.
E. Electricity can flow through this.
F. The flow of electricity through a circuit.
Draw a diagram of a series circuit, including the battery and the resistor.
Label the diagram, indicating the + and - terminals of the battery
Solve for I.
Diagram
Correct Work Shown
14
V=
I =
R=
10
25
V
A
W
ANS: I = 0.4 A
Read
The following lab was performed by students:
With a number 2 pencil, students colored a dark line on paper.
With one multimeter probe placed where indicated, the other probe was placed
at point A, and resistance was measured.
Then, the other probe was placed at point B, and resistance was measured.
Fill in the blanks
15 In some circuits, the electrons are pushed in one direction along a conductor
as shown. These are called ________________ current circuits.
16 In some circuits, the electrons are pushed back and forth along a conductor
as shown. These are called _________________ current circuits.
17 Electrical energy is sent to your home in the form of:
18 There is a relationship between voltage, current, and resistance.
It is called:
19 Electrical current is measured in:
current.
5
W
15 W
12 V
20 The total resistance of this circuit is:
20 W
21 The total current through this circuit is:
0.6 A
12 V
8W
8W
12 W
22 The total resistance of this circuit is:
3 W
23 The total current through this circuit is:
4A
5W
A troubleshooting manual advises that the
resistance between point A and point B should
be 20W with a 5% tolerance. Find:
9W
3W
4W
19 W
25 The high tolerance value: 21 W
26 The total circuit resistance: 15.71 W
24 The low tolerance value:
27 Whether or not the circuit
will be acceptable
28 Find the power dissipated by this resistor. 0.32 W
29 What is the resistance of a
6 V
35 W iron that operates on 120 Volts? 411.4
NO
R=
111 W
W
30 What is the power generated by a freezer that operates on 220 Volts and
has an internal resistance of 545 W ? 88.8 W
Cal