Physics Flashcards
1
Q
What are positive charges caused by?
A
An energy deficiency
2
Q
What are negative charges caused by?
A
An excess of energy
3
Q
What are neutral charges caused by?
A
Balanced energy
4
Q
What is an electroscope?
A
Measures static charge strength (not usually type)
5
Q
What is a voltmeter?
A
Measures energy, high resistance, only in parallel
6
Q
What is an ammeter?
A
Measures energy, low resistance, only in series
7
Q
What are three rules about charges?
A
- Like charges repel
- Opposites attract
- Neutral is attracted to a charged object
8
Q
Induction vs conduction
A
Negative by induction
Positive by conduction
9
Q
What causes current? What are the units?
A
Caused by flow of energy on a conductor. Units=Amperes (A) measured in ammeters
10
Q
What are the three types of charges?
A
Positive, negative and neural
