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Electricity: P.S.
Study cards for Physical Science: Electricity
Question | Answer |
---|---|
What is electrical current measured in? | Amperes |
What is the most used outlet voltage in America? | 120 Volts |
What is a material called when it lets electrons flow easily through it? | A Conductor |
What is a material called when it lets electrons flow slowly through it? | A Insulator |
What is an electric field? | A area around an electron that controls the force pushed on other electric charges. |
What is static electricity? | A accumulation of extra electric charge on a object. |
What are fuses for? | They prevent circuits from overheating. |
Electrical power is measured in: | Watts |
What is the equation for power? | P=IV |
Batteries are what kind of circuit? | A Series Circuit |
Ohm's Law states: | The current in a system equals the voltage difference divided by the resistance. |
What are amperes abbreviated as? | A |
What are volts abbreviated as? | V |
What is the equation for electrical current? | I=V/R |
Is wood an insulator? | Yes, wood is an insulator. |
What is a dry-cell battery? | A cell that has two electrodes surrounded by an electrolyte. |
What is a wet-cell battery? | A cell that has two connected plates made of different metals or metallic compounds in an electrolyte. |
Resistance is: | A tendency to slow the flow of electrons and to convert electrical energy into different types of energy. |
A voltage difference is: | Related to the force that causes electrical charges to flow. |
What is thunder? | It is when the electrical energy inside of a lightning bolt rips off electron atoms in the atmosphere, creating sound waves and heat. |
Do the same charged electrons attract or repel? | Repel. |