Title: M1L1 Video Checkup
Course: ELEC 160WH Introduction to Electricity/Electronics > Section: ELEC 160WH Introduction to Electricity/Electronics

Q: The simplest complete circuit requires a ___________________________.
- source/potential difference (example: battery), conductive pathway (example: wire), a load or resistance (like a bulb or heating element)
- source (current flow), charge, and direction
- source of electrons and terminals
- None of the above
A: source/potential difference (example: battery), conductive pathway (example: wire), a load or resistance (like a bulb or heating element)

Q: Electrons “want to” and flow in greatest quantity through the path of least _______________.
- conductance
- resistance
- voltage
- distance
A: resistance

Q: Metal is a good conductor because it has __________.
- few valence electrons in the outer shell
- four valence electrons in the inner shell
- eight valence electrons in the outer shell
- no valence electrons in the inner shell
A: few valence electrons in the outer shell

Q: An insulator does not conduct electrons (electricity).  Which below is a good insulator? (Check all correct answers.)
- Glass
- Plastic
- Steel
- Saline water
A: Glass; Plastic

Q: Batteries (or any voltage sources for that matter) can be placed in series to increase the overall voltage.  Which diagram above most likely shows how AA (1.5V) batteries are arranged and connected within a device requiring 6V of potential?
- Figure “a.”
- Figure “b.”
A: Figure “a.”

Q: With DC sources, current always flows from ____________________.
- the negative terminal to the positive terminal
- the positive terminal to the negative terminal
- the negative terminal to the negative terminal
- the positive terminal to the positive terminal
A: the negative terminal to the positive terminal

Q: A voltage source ideally can deliver any amount of current to a load.  In reality, though, a load can only draw so much current from a voltage source.  This limitation is why a 12V lantern battery cannot take the place of a 12V car battery.  The lantern battery has the right potential, but it just cannot deliver the current flow the car’s starter motor would require.  This highest amount of current that a source can deliver safely is called its ________________.
- maximum output current
- maximum power
- maximum watt hours
- energy factor
A: maximum output current

Q: Another word used to describe how much current a source can deliver could be called the sources ____________.   This is term is usually used to describe how much maximum current a conductor or switch can carry safely.
- conductance
- ohmage
- amperage
- ampacity
A: ampacity

Q: There are many power sources that have a fixed polarity.  These devices are called DC or _____________ sources since the current they produce flows only in one direction.
- direct current
- dual conductor
- double coulomb
- double current
A: direct current

Q: A battery builds up electrons on one of its two terminals by chemical means.  This terminal is called the ________.
- cathode or positive terminal
- electron terminal
- anode or negative terminal
- positron terminal
A: anode or negative terminal

Q: Atoms having a net charge are called ________________.
- diodes
- ions
- positrons
- polarized atoms
A: ions

- 1.5V
- 3V
- 10V
- 7.9V
A: 1.5V

Q: The source voltage and how much resistance is connected to that source is what determines how much current will flow from/to the source.
- True
- False
A: True

Q: A circuit with a relatively low resistance will always draw more current than a circuit with a higher resistance if _________________.
- their sources are the same voltage
- their currents are the same
- their voltages are different
A: their sources are the same voltage

Q: The more the current-flow between a source’s two terminals, the ____ resistive the pathway is.
- more
- less
A: less