SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
Electronics
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Current flow assumed to be in a direction from high charge concentration (+) to low charge concentration (-).
Ohm (O)
Conventional current flow
Energy
Atom
2. Current periodically reverses direction
Power
AC Current
Resistance
Current
3. A circuit that has a broken path so that no electric current can flow through it. A circuit with infinite resistance.
Open circuit
DC Current
Valence electrons
LED
4. V= IR or Voltage is equal to current times resistance
AC
Ohms
Resistance
DC Current
5. The unit of electric charge - which is the basic unit of measurement for current flow in an electric circuit.
Indicator
Coulomb (C)
Ampere (A)
Semiconductor
6. Something that can turn on or off the flow of electricty.
Opposites attract
Proton
Switch
Valence electrons
7. The part of an electric system that affects what the system does; a switch to turn on and turn off a light is a type of control.
Closed circuit
Control
Electrostatic field
Capacitor
8. Electric force - or pressure - that causes current to flow in a circuit.
Voltage
Resistance
Short circuit
Ohm (O)
9. The part of an electric system through which electrons travel from a source to a load - such as the electric wiring used in a building.
Kinetic energy
Ohms
Path
Work
10. The basic materials that make up all other materials; they exist by themselves (such as copper - hydrogen - carbon) or in combination with other elements (water is a combination of the elements hydrogen and oxygen).
AC
Orbital
Element
Watt (W)
11. Electrons located in the outer orbit of an atom that are easily removed and result in flow of electric current.
Neutron
Insulator
Opposites attract
Free electrons
12. An object which resists the flow of electricity.
Ohms
Resistor
Orbital
Load
13. The part of an electric system that converts electric energy into another form of energy - such as an electric motor that converts electric energy into mechanical energy.
Why resistors are important
Load
Indicator
Kinetic energy
14. The unit of measurement of electric potential.
Work
Insulator
Source
Volt (V)
15. The unit of measurement of electric resistance.
Ohm (O)
Conductor
LED
Coulomb (C)
16. The path along which electrons travel around the nucleus of an atom.
Insulator
Orbit
Neutron
Electron current flow
17. The difference of electrical potential between to points on a circuit
Load
Electrostatic field
Power
Voltage
18. A neutrally charged atom
Neutron
AC Current
Conductor
Ohms
19. (R) The opposition to the flow of electric current in a circuit; its unit of measurement is the ohm (O).
Semiconductor
Why resistors are important
Resistance
Kinetic energy
20. A positively charged atom
Proton
Valence electrons
Short circuit
Opposites attract
21. Current flow assumed to be in the direction of electron movement from a negative (-) potential to a positive (+) potential.
Resistance
Valence electrons
Potential energy
Electron current flow
22. Alternating Current
Valence electrons
Conductor
Closed circuit
AC
23. The part of an electric system that shows whether the system is on or off or that a specific quantity is present.
Proton
Static charge
Indicator
AC
24. The space around a charged material in which the influence of the electric charge is experienced.
Insulator
Metallic bonding
Electrostatic field
AC Current
25. A charge on a material that is said to be either positive or negative.
Ohm (O)
Switch
Static charge
Semiconductor
26. Energy that exists because of movement.
Voltage
Kinetic energy
Orbit
Neutron
27. A material that allows electric current to flow through it easily.
Open circuit
Indicator
Conductor
Electron current flow
28. A unit of electric charge that represents a large number of electrons. ~ 6.28 x 1018 electrons
Orbit
Electromotive force (EMF)
Coulomb (C)
Voltage
29. The capacity to do work.
Neutron
Switch
Energy
Watt (W)
30. A material that has a value of electric resistance between that of a conductor and an insulator and is used to manufacture solid- state devices such as diodes and transistors.
Source
Electrostatic field
Electron
Semiconductor
31. Areas through which electrons move; designated as s - p - d - and f.
Orbital
Resistance
Why resistors are important
Capacitor
32. The smallest particle to which an element can be reduced and still retain its characteristics.
Electrostatic field
Atom
Voltage
Power
33. Current flows in one direction only.
DC Current
Ampere (A)
Static charge
Opposites attract
34. The transforming or transferring of energy.
Electrostatic field
Electromotive force (EMF)
Orbit
Work
35. The part of an electric system that supplies energy to other parts of the system - such as a battery that supplies energy for a flashlight.
Free electrons
Static charge
Source
Resistance
36. The rate at which work is done.
Source
LED
Why resistors are important
Power
37. Electrons in the outer orbit of an atom.
Potential energy
Ampere (A)
Semiconductor
Valence electrons
38. Resistors are objects that resist flow. If a light bulb gets to much electricty it can burn out. In other terms - NOT GOOD!!
Short circuit
Why resistors are important
AC Current
Insulator
39. The pressure - or force - that causes electric current to flow.
Element
Potential energy
Capacitor
Electromotive force (EMF)
40. A material that offers a high resistance to electric current flow.
Semiconductor
Insulator
Path
Element
41. The unit of measurement of electric power.
Kinetic energy
Watt (W)
Current
Energy
42. The method by which loosely held atoms are bound together in metals.
Static charge
Watt (W)
Metallic bonding
Atom
43. Energy that exists because of position.
Ampere (A)
Short circuit
Electron
Potential energy
44. Light Emitting Diode
Free electrons
Valence electrons
LED
Resistor
45. Do Opposites attract or move away from each other?
Closed circuit
Watt (W)
Opposites attract
Work
46. The movement of electric charge; the flow of electrons through an electric circuit.
Current
Orbit
Resistance
Opposites attract
47. Electricity at rest caused by accumulation of either positive or negative electric charge.
Free electrons
Proton
Static electricity
Orbit
48. A circuit that forms a complete path so that electric current can flow through it.
Orbital
Closed circuit
Short circuit
DC Current
49. A circuit that forms a direct path across a voltage source (with little or no resistance) so that a very high and possibly unsafe electric current flows.
Conventional current flow
Watt (W)
Short circuit
Electron
50. A device that stores energy between a pair of conductors
Stable atom
Capacitor
Closed circuit
Proton