DC Circuits Final Review questions with verified detailed
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solutions
True or False: Carbon film and metal film resistors have more precise resistance values than
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carbon composition resistors. - ✔✔True
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True or False: The most common resistor trouble is a short. - ✔✔False
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True or False: Rheostats and potentiometers are variable resistors. - ✔✔True
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True or False: The resistance of a PTC thermistor increases as its operating temperature
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decreases. - ✔✔False || ||
True or False: An open resistor in a series circuit causes the total current to increase. -
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✔✔False
True or False: On a back-off ohmmeter scale, full scale deflection of the meter's pointer
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corresponds to zero ohms. - ✔✔True || || || || ||
True or False: The normal voltage across a good fuse is zero volts. - ✔✔True
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True or False: A mesh is the simplest possible closed path. - ✔✔True
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True or False: A branch point is also called a node. - ✔✔True
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True or False: A constant voltage source has a high internal resistance. - ✔✔False
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, True or False: Cells connected in series increase the output voltage. - ✔✔True
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True or False: Cells (batteries) are connected in parallel to increase the current capacity. -
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✔✔True
True or False: The shelf life of most primary cells can be extended by storing them in a low-
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temperature environment. - ✔✔True || || ||
The smaller unit into which compound may be divided without altering the characteristics of
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the compound is a: - ✔✔molecule
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The term "load" in electronics normally refers to: - ✔✔current
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Which is considered to be the best conductor? - ✔✔silver
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An ion is an atom that has: - ✔✔lost or gained one or more valence electrons, and has a net
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charge
The resistance of a short piece of copper wire is: - ✔✔practically zero
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A current of 2000 microAmps also equals ______ mA. - ✔✔2 mA
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One horsepower (hp) is equal to: - ✔✔746 W and 550 ft*Ib/s
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In a parallel circuit the total resistance equals: - ✔✔total voltage divided by total current
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solutions
True or False: Carbon film and metal film resistors have more precise resistance values than
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carbon composition resistors. - ✔✔True
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True or False: The most common resistor trouble is a short. - ✔✔False
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True or False: Rheostats and potentiometers are variable resistors. - ✔✔True
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True or False: The resistance of a PTC thermistor increases as its operating temperature
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decreases. - ✔✔False || ||
True or False: An open resistor in a series circuit causes the total current to increase. -
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✔✔False
True or False: On a back-off ohmmeter scale, full scale deflection of the meter's pointer
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corresponds to zero ohms. - ✔✔True || || || || ||
True or False: The normal voltage across a good fuse is zero volts. - ✔✔True
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True or False: A mesh is the simplest possible closed path. - ✔✔True
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True or False: A branch point is also called a node. - ✔✔True
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True or False: A constant voltage source has a high internal resistance. - ✔✔False
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, True or False: Cells connected in series increase the output voltage. - ✔✔True
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True or False: Cells (batteries) are connected in parallel to increase the current capacity. -
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✔✔True
True or False: The shelf life of most primary cells can be extended by storing them in a low-
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temperature environment. - ✔✔True || || ||
The smaller unit into which compound may be divided without altering the characteristics of
|| || || || || || || || || || || || || ||
the compound is a: - ✔✔molecule
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The term "load" in electronics normally refers to: - ✔✔current
|| || || || || || || || ||
Which is considered to be the best conductor? - ✔✔silver
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An ion is an atom that has: - ✔✔lost or gained one or more valence electrons, and has a net
|| || || || || || || || || || || || || || || || || || || ||
charge
The resistance of a short piece of copper wire is: - ✔✔practically zero
|| || || || || || || || || || || ||
A current of 2000 microAmps also equals ______ mA. - ✔✔2 mA
|| || || || || || || || || || ||
One horsepower (hp) is equal to: - ✔✔746 W and 550 ft*Ib/s
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In a parallel circuit the total resistance equals: - ✔✔total voltage divided by total current
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