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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. Areas through which electrons move; designated as s - p - d - and f.
Orbital
Voltage
Free electrons
AC
2. A unit of electric charge that represents a large number of electrons. ~ 6.28 x 1018 electrons
Orbit
Valence electrons
Indicator
Coulomb (C)
3. 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.
Resistance
Short circuit
Stable atom
Electron
4. Something that can turn on or off the flow of electricty.
Capacitor
Ampere (A)
Control
Switch
5. Electrons in the outer orbit of an atom.
Ampere (A)
Valence electrons
Opposites attract
Energy
6. 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.
Path
Electromotive force (EMF)
Short circuit
Proton
7. V= IR or Voltage is equal to current times resistance
Ohms
Closed circuit
Static charge
Electron
8. The unit of measurement of electric resistance.
Electron current flow
Semiconductor
Ohm (O)
Metallic bonding
9. A material that allows electric current to flow through it easily.
Opposites attract
Static charge
Atom
Conductor
10. Light Emitting Diode
Conventional current flow
Why resistors are important
Coulomb (C)
LED
11. A neutrally charged atom
Path
Control
Coulomb (C)
Neutron
12. Electrons located in the outer orbit of an atom that are easily removed and result in flow of electric current.
Watt (W)
Electrostatic field
Closed circuit
Free electrons
13. The part of an electric system that shows whether the system is on or off or that a specific quantity is present.
Energy
AC Current
Element
Indicator
14. A charge on a material that is said to be either positive or negative.
Short circuit
Path
Indicator
Static charge
15. The unit of measurement of electric power.
Watt (W)
Insulator
Resistor
LED
16. The unit of measurement of electric potential.
Capacitor
Volt (V)
Kinetic energy
Voltage
17. A device that stores energy between a pair of conductors
Capacitor
Metallic bonding
Conductor
Open circuit
18. 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.
Conventional current flow
Control
Volt (V)
Potential energy
19. Resistors are objects that resist flow. If a light bulb gets to much electricty it can burn out. In other terms - NOT GOOD!!
Metallic bonding
Voltage
Short circuit
Why resistors are important
20. A circuit that has a broken path so that no electric current can flow through it. A circuit with infinite resistance.
Valence electrons
Energy
Open circuit
Insulator
21. Energy that exists because of position.
Energy
Indicator
Orbital
Potential energy
22. The unit of electric charge - which is the basic unit of measurement for current flow in an electric circuit.
Power
Ampere (A)
Coulomb (C)
Indicator
23. Current flow assumed to be in a direction from high charge concentration (+) to low charge concentration (-).
LED
Conventional current flow
Potential energy
Conductor
24. 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.
Semiconductor
Current
Free electrons
DC Current
25. An atom that does not release electrons under normal conditions.
LED
Resistor
Stable atom
Electron
26. A circuit that forms a complete path so that electric current can flow through it.
Neutron
Closed circuit
Coulomb (C)
Potential energy
27. A material that offers a high resistance to electric current flow.
Indicator
Insulator
Source
Volt (V)
28. The difference of electrical potential between to points on a circuit
Indicator
Static charge
Semiconductor
Voltage
29. A positively charged atom
Watt (W)
DC Current
AC
Proton
30. The transforming or transferring of energy.
Power
Electron current flow
Work
Metallic bonding
31. Current flows in one direction only.
Energy
Metallic bonding
Voltage
DC Current
32. The path along which electrons travel around the nucleus of an atom.
Orbit
Voltage
Element
Work
33. An object which resists the flow of electricity.
AC
Ohms
Resistor
Short circuit
34. Electric force - or pressure - that causes current to flow in a circuit.
Work
Neutron
Proton
Voltage
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.
Valence electrons
Stable atom
Source
Path
36. The space around a charged material in which the influence of the electric charge is experienced.
Proton
Electrostatic field
Watt (W)
Electron current flow
37. The movement of electric charge; the flow of electrons through an electric circuit.
AC
Metallic bonding
Current
Ampere (A)
38. The smallest particle to which an element can be reduced and still retain its characteristics.
Semiconductor
Atom
Electron
Resistor
39. The method by which loosely held atoms are bound together in metals.
Closed circuit
Metallic bonding
Switch
Power
40. (R) The opposition to the flow of electric current in a circuit; its unit of measurement is the ohm (O).
Opposites attract
Proton
Resistance
Ampere (A)
41. Do Opposites attract or move away from each other?
Stable atom
Opposites attract
Capacitor
Resistor
42. Current periodically reverses direction
Ampere (A)
AC Current
DC Current
Power
43. Alternating Current
Open circuit
Resistance
AC
LED
44. The rate at which work is done.
Power
Capacitor
Open circuit
Ampere (A)
45. 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).
Element
Load
Orbital
Insulator
46. 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.
Load
Ohm (O)
LED
DC Current
47. Energy that exists because of movement.
Kinetic energy
Ohms
Electrostatic field
Electromotive force (EMF)
48. Current flow assumed to be in the direction of electron movement from a negative (-) potential to a positive (+) potential.
Electron current flow
Capacitor
Why resistors are important
Switch
49. The capacity to do work.
Control
Semiconductor
Energy
Coulomb (C)
50. An atomic particle said to have a negative (-) electric charge; electrons are the means by which the transfer of electric energy takes place.
Electron
Electron current flow
Ohm (O)
Resistor