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Electricity and Magnetism Midterm
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Cards (130)
In
Ancient
Egypt
Electric catfish was called the
Thunderer
of
the
Nile
and appeared in carving dating from
2725
BC
What was the first attempt to use electrical energy?
In medicine
Greeks
,
Romans
, and
Egyptians
used electric fish to treat headache, mental illness, and gout
Anteros
, the freed slave of
Caesar Augustus
decided for a walk in the beach and felt shock. The source of the shock is from the live
torpedo ray.
Thales of Miletus
Discovered static electricity.
William Gilbert
The term electricity was coined from Greek word of amber. Who did it?
Leyden jar
Device for storing static electricity
Pieter Van Musschenbroek
Discovered
Leyden jar
Leyden jar
Device that can store an electric charge
Benjamin Franklin
Was most credited for discovering electricity in
1752
Benjamin Franklin
Famous kite experiment
Alessandro Volta
Developed the first electric battery known as
voltaic pile
Electricity wasn't solely based by
animals
, it can also be produced by
chemical reactions
and made to
travel in circuit
Michael Faraday
Developing the idea of
magnetic field
Thomas Edison
Inventor of the light bulb
Nikola Tesla
Edison's rival.
Worked before at the French branch of
Edison's company.
Developed AC
Electricity
The interaction or the flow of electric charges through a conductor
Electric Charge
A fundamental physical property that causes object to feel attractive or repulsive force
Two components of Electric Charges
Magnitude
Polarity
Magnitude
Describe its strength
Polarity
Determines how it will interact with other charges
Polarity
Determines how it will interact with other charges
Two Charged Polarities according to Benjamin Franklin
Positive
Charge
Negative
Charge
Neutral
Electron
Located on outer edges
Creates a net
negative
charge
Q
Electric charges is designated by what letter?
+q
Excess number
of positive charge, fewer electrons
-q
Excess number of negative charges, more electrons than protons
Two negatively charged objects,
repel
Two positively charged objects,
repel
A negatively and a positively charged objects,
attract
Static Discharge
Conduction
Induction
Friction
Friction
One object rubbing against another
Conduction
Direct contact
Induction
No direct contact (through an electric field)
How to identify which object will lose or gain electrons?
Triboelectric series
Triboelectric series
A list of materials in order according to their tendency to
lose
or gain electrons
Charge affinity
Use to identify the amount if love a material has
The objects on the higher will mostly like
lose
and
give
up
electrons and become
positive
Static
Electricity
Build up of electric charge
It does not flow
It is stored
Current Electricity
Electricity that moves and are in state of motion
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