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