How does an ammeter take a measurement of current in a circuit - Answer Connected in
series with the circuit
If the resistance in a circuit is doubled, what happens to the current in the circuit -
Answer Current will be halved
How is voltage measured in a circuit - Answer Meter must be parallel with volt being
measured
What is the term for the outermost shell of an atom - Answer Valence shell
Atom Nucleus contains - Answer Neutrons and protons
What does the symbol E represent in ohms law - Answer Voltage
What will be the effect on total resistance in a wire if its length is doubled - Answer
Resistance is doubled
If the valence shell of an atom has only one electron _______? - Answer Atom will act as a
good conductor
Unlike charges ______? - Answer Attract
A neutral atom has _____? - Answer equal number protons and electrons
, What is the unit of measurement of current - Answer amperes
Explain the flow of current - Answer Current flow is explained as a uniform flow of
electrons from negative to positive
What is the unit of measurement of the amount of electrons passing a given point -
Answer Coulomb
What is the unit of measurement used in measuring the potential difference across two
points in a circuit - Answer Volt
What is the unit to measure opposite to current flow - Answer Ohms
What happens to resistance in a wire, if its width is increased four times - Answer
Resistance is 1/4
What does the designation DPDTNO switch represent - Answer Double-pole,
Double-Throw, Normally Open switch
_____ refer to the moveable contacts on a switch - Answer Poles
Contact wear is always _______ on DC switches than AC switches - Answer greater
Describe maintained contact switch action - Answer When the switch is actuated once,
contacts close an remain close
What type of switch would be found at a terminal landing - Answer Unidirectional limit
switch
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