set 1 Flashcards
What is the flow of electricity called?
current
What is resistance measured in?
ohms
What charge moves when a balloon is rubbed against your hair?
negative charge or electrons
A atom contains:
a) only positive charges
b) only negative charges
c) both positive and negative charges
d) no charges
c) both positive and negative charges
Two different neutral substances become charged by exposure to:
a) grounding
b) friction
c) sunlight
d) air
b) friction (rubbing them together)
A positively charged object has:
a) gained electrons
b) gained protons
c) lost protons
d) lost electrons
d) Lost electrons
The law of electric charges state?
You should have 4 points
- like charges repel
- unlike charges attract
- neutral objects are attracted to a negatively charged object
- neutral objects are attracted to positively charged objects
An object acts charged if a charged object is placed near it. This is an example of charging by:
a) friction
b) touch
c) conduction
d) induction
If the objects never touch the charge is transferred by
D) INDUCTION
A good insulator is ?
give 2 examples
NON METALS are good insulators
plastic, wool, silk, glass, wood,
Which of the following is NOT required for a circuit to function?
a) power source
b) electrical load
c) switch
d) conducting wires
A circuit can function without a SWITCH
Electrical Potential is also known as :
a) watts
b) amperes
c) voltage
d) protons
c) VOLTAGE
Two bulbs are connected in a parallel circuit to a cell. If one bulb burns out, the brightness of the other bulb will:
a) decrease
b) increase
c) go out
d) remain the same
d) remain the same.
The load in a circuit can convert electrical energy into:
a) light energy
b) sound energy
c) heat energy
d) mechanical energy
e) all of the above
The Load can convert electrical energy into
e) ALL OF THE ABOVE
An ammeter measures:
a) electric current
b) power
c) resistance
d) voltage
AMMETER MEASURE CURRENT
What would you add to an electric circuit to measure potential difference?
Voltmeter
