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