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