103B Current, Voltage & Resistance Flashcards
Electrons are _____ charged
Protons are _____ charged
- Negatively
- Positively
If an atom gains free electrons it becomes a _____
If an atom loses free electrons it becomes a _____
- Negative
- Positive
Flow of electrons is called
Electrical current
When the charges are equalized, the battery is
Dead and the electrical current stops flowing
_____ is the buildup of electrical charge in an isolated object
Static electricity
6.28 x 10(18) =
1 Coulomb
Electric charge symbol
Q
Q =
10C
I =
10A
A current of 1A is 1 coulomb of charge passing a point every second
T or F
True
Electron flow
Answer.
- -> +
Conventional flow
+ -> -
_____ is the measurement of difference in charge
Voltage
- Source voltage
- Voltage drop
- E
- V
A practical electrical circuit consists of 4 components
- Source of emf
- Conductors
- Switch
- Load
Copper is the most common _____
Conductor
Capable of opening a circuit
Switches
Consume electricity while performing an action
Loads
Low resistance -> _____
High resistance -> _____
- Conductor
- Insulator
One volt is the value of the difference in charge that will cause a current of one ampere to flow in a circuit with a resistance of one ohm
T or F
True
Ohm’s Law in the form of an equation
I = E/R
What is electromotive force (emf)?
An imbalance of electron distribution or a difference in charge between 2 points
What are the basic components of an electrical circuit?
- An emf source
- conductors
- switch
- load
