A properly soldered connection will appear __________.
Answer(s): A
Shiny joints indicate a properly soldered connection.
Which electronic component can store charge?
Answer(s): D
A capacitor can store a charge. A capacitor stores energy in an electric field. Positive charges collect on one plate and negative charges on the other plate.
Most wires are made from __________.
Copper has a high conductivity and is financially cheaper than most metals.
Most 12V car battery are made up of six individual cells connected in series.What is the voltage of each cell in a car battery?
Voltages in series are added to determine the total voltage, so divide 12 volts by 6 cells to get 2 volts. To be exact, each cell in a car battery provides 2.1 volts for a total of 12.6 volts when connected in a series and at full charge.
What is the frequency of the alternating voltage and current typically used in the United States?
Answer(s): C
Electricity in the U.S. has a frequency of 60hz.
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