1.
How many valence electrons are needed to make a good conductor?
A. 
B. 
C. 
D. 
2.
An atom with eight electrons in its outermost shell is said to be
A. 
B. 
C. 
D. 
3.
"Dielectric" is the term used for
A. 
B. 
C. 
D. 
4.
"The flow or drift of electrons through a conductor" in the same direction at the same time is the definition of
A. 
B. 
C. 
D. 
5.
The potential difference between two points in a circuit that exerts a force on free electrons is called
A. 
B. 
C. 
D. 
6.
What is used to control current flow in a circuit?
A. 
B. 
C. 
D. 
7.
Given a voltage of 24 volts and a resistance of 18 ohms in a series circuit, the current through the resistor would be
A. 
B. 
C. 
D. 
8.
Total current in a series circuit is equal to the
A. 
Current through one component
B. 
Sum of the current through each component
C. 
Reciprocal of the current through one component
D. 
Reciprocal of the sum of the currents through each component
9.
In a parallel circuit, the total voltage is equal to the
A. 
Sum of the voltages across each branch
B. 
Voltage across each resistor
C. 
Voltage across each branch
D. 
The reciprocal of the voltage across the resistance
10.
Source current in a parallel circuit will be divided according to branch
A. 
B. 
C. 
D. 
11.
What is the total resistance of a parallel circuit with branch voltages of 440 volt (v) and 440v and branch currents of 4 amp (a) and 16a?
A. 
B. 
C. 
D. 
12.
Total current in a series-parallel circuit remains the same throughout the
A. 
Parallel portion of the circuit and divides according to component resistance in the series portion
B. 
Series part of the circuit and divides according to branch resistance in the parallel portion
C. 
Parallel portion of the circuit and increases according to component resistance in the series portion
D. 
Series part of the circuit and increases according to component resistance in the parallel portion
13.
What is the total current in a series-parallel circuit that has a total voltage of 48 volts (v), a series current of 6 amps (a), one branch current of 2a, and the other branch resistance of 3 ohms?
A. 
B. 
C. 
D. 
14.
The area around a magnet where its influence can be felt is the definition of the
A. 
B. 
C. 
D. 
Law of attraction and repulsion
15.
The magnetism that remains after the magnetizing force has been removed is known as
A. 
B. 
C. 
D. 
16.
The magnetic field of an electromagnet can be varied by changing the
A. 
B. 
Number of turns in the coil
C. 
Amount of current through the coil
D. 
17.
The electromechanical generation of a voltage requires a magnetic field, relative motion, and
A. 
B. 
C. 
D. 
18.
In a simple generator, which would be the most difficult method to increase the output?
A. 
Increase the area of the conductor
B. 
Increase the amount of motion
C. 
Increase the strength of the magnetic field
D. 
Increase the relative resistance
19.
The principle behind all electromechanical generation is
A. 
B. 
C. 
D. 
Electromagnetic induction
20.
An inductor stores energy in the form of
A. 
B. 
C. 
D. 
21.
The process by which a current change in one coil produces a voltage in another coil is called
A. 
B. 
C. 
D. 
22.
A transformer will change all of the following except
A. 
B. 
C. 
D. 
23.
Normally, the winding of a transformer that is connected to a power source is known as the
A. 
B. 
C. 
D. 
24.
A relay is an electrically operated
A. 
B. 
C. 
D. 
25.
A relay that once energized, requires a second coil to be energized before the contacts will return to their original positions is called a
A. 
B. 
C. 
D.