Static Electricity
What happens when electrons build on the surface of an object
static electricity
What are required for current electricity
circuit and power source
What is the continuous, unbroken path of electricity called?
circuit
A device to produce current with two different metals and a solution
Electric cell.
A battery contains one or more electric cells.
Similarity of static electricity and magnetism
Like repels and opposite attract
Joseph Henry & Michael Faraday
Describe one way magnetism produce electricity
move the coil of wire around the magnet
lighting
static electricity
What is the name of conductor that can be moved to either bridge or not bridge the gap in a circuit
switch
short circuit
The measurement of the amount of electrical push or force in a circuit
Volt
True or false
Magnetic force is strongest at the middle of the magnetic
false
Who discovered that adding a metal core to a coil of wire increased the magnetism?
William Sturgeon
Why buildings have electrical wiring arranged in parallel rather than series circuits?
because the problem of one appliance will not affect the function of the others
What will happen when the static electricity releases?
shock
What is the name of the type of material that allows electricity to flow through it easily?
And name three
Conductor
copper, silver, gold, aluminum, etc
What is the name of a very small circuit with all the parts built into it?
integrated circuit
the measurement of how much current flows through a given part of a circuit in one second
ampere
The area of magnetic force is also known as
magnetic field
A coil of wire with a core attached to an electrical source is called?
electromagnet
If someone has fallen onto a high voltage electric fence and is getting shocked, would it be safer to rescue worker to use a metal pole or a wooden stick to pull him away from the fence? Why?
the wood stick should be used, for wood is insulator, the rescuer won't get electrocuted too.
who determined that lightning is static electricity?
Benjamin Franklin
What is the name of material that does not allow electricity to flow through it?
And name three
insulator
glass, plastic, wood, ceramic, leather, etc
what is the name of circuit that has only one path for the flow of electricity?
Series circuit
the measurement of power or how fast work is done
watt
Who discovered that current traveling through a wire produces a weak magnetic field in the living wire?
Hans Christian Oersted
The strength of an electromagnet can be affected by what factors?
the size of the core or the number of coils around the core
What element is an excellent semiconductor?
Silicon
True or false: two objects with the same charge will attract to each other
false
What is the name of material that reduced the flow of electricity?
And name a few
resistor
filament of light bulb, heating material of toaster
What is the type of circuit that has multiple paths for the flow of electricity.
Parallel circuit.
name two types of batteries
Wet-cell battery and dry-cell battery
What is the principle used by a generator to converts motion into electricity energy?
electromagnetism
What is another name for magnetic levitation train?
Maglev train
similarity and difference of electrical device and electronic device
both use electricity
electronic device is made to communicate information, and electric device cannot