A
what is the definition of an electrical charge?
It is a property of matter that can be positive or negative.
what is the definition of Insulators? give 2 examples
Insulators: are materials that do not let charges flow through them easily.
ex. Rubber, Plastic, Glass
what is the definition of an electric current?
It is a flow of electrical charges *so basically its the electricity that flows through*
The voltage of an electric current can be increased by a(n)?
a. fuse
b. insulator
c. resistor
d. transformer
d. transformer
The thin wire inside of a lightbulb is called?
a filament
The strength of a power source is its...?
a. charge
b. discharge
c. resistance
d. voltage
d. voltage
What safety device switches off dangerous currents?
a circuit breaker
A simple circuit is made up of how many parts?
3
If I have a penny, is it considered an insulator or conductor?
Conductor (because its a metal)
If you walk across a carpet rubbing your socks against it, then touch something metal, it can cause what movement of electricity?
A Discharge
what is the definition of static electricty?
it is the buildup of electrical charges on an object.
What is a series circuit?
When an electric current follows one path
What are the parts that make up the simple circuit, name them all (be specific) *think of the pictures in the book*
Power source (battery)
Connector (wires)
Switch (turns on/off electrical currents)
What supplies energy in an electric circuit?
A battery
What does a Transformer do?
They are used to change the voltage of an electric current. (it can boost the voltage)
what is the definition of discharge?
it is the movement of static electricity from one object to another.
What is a parallel circuit?
when electricity/an electric current flows through more than one path.
Closed circuit (if its unbroken that means there's no opening for the electricity to escape)
what is the definition of Resistance?
It is the ability of a substance to oppose or slow down electric current.
A circuit breaker does what?
It stops the flow of charges by switching off the current if it gets too high.
What is the definition of conductors? And give me 2 examples of conductors
Conductors are materials that let charges flow through them easily.
ex. Metals (Copper or Silver)
what device protects against dangerous amounts of electric current?
A fuse
If a circuit has many openings/breaks, it is called an?
open circuit (openings in the circuit causes electricity to escape)
What does resistance allow?
it allows electrical energy to be changed into other forms of energy such as light, heat and motion.
just so you know, examples of resistors include, Lightbulbs(uses light), Electric motor (uses motion), and a hair dryer (uses heat)
A Short Circuit can cause the wires to what?
to heat up and cause a fire