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Electrical Energy can be
transferred and stored
Static Electricity
Static Electricity
Is created when there are unequal numbers of
protons and electrons in atoms
Protons : have a positive charge
Electron: have a negative charge
Can create attractive and repulsive forces
Equal Protons(+) and electrons (-)
= Neutral Charge
More Protons(+) than electons (-)
= positively Charged
More Electrons (-) than Protons(+)
= Negative Charge
Built up a static Charge
-Means stationary or not moving
Static electricity does not flow but rather it
may jump from one object to another in
the form of electrical discharge.
Charge Separation
Resulting shock referred to as Electrical
Law of Electric Charges
1. Opposite Charges attract each
2. Similar Charges repel each other
3. Charged objects attract neutral
Van De Graaff Generator
Current Electricity
• The steady flow of particles is called electrical
• Requires:
– Energy Source
– Completed path or Circuit
• Rate at which an electrical current flows
– Often called “amp” (A)
– Most electrical devices at home have a current of
less than 15 A
• Is a path that controls the flow of electricity
• Must include:
– Conductor
• Material that electrical charge can move through (wire,
gases and other fluids)
– Energy Source
– Load
• Device to convert electrical energy to another form of
energy (light bulb)
• Is the measure of how much
electrical energy each charged
particle carries
• The higher the voltage is, the
greater the potential energy of each
• Volt (V)
• Measured with a Voltmeter