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PS 09 Elec & Mag
8th Grade 2022
Question | Answer |
---|---|
What is the build up of electric charges by friction or other means. | Static Electricity |
Like charges ___. (+ and +, or - and -) | Repel |
Opposite charges ___. (+ and -) | Attract |
A release of electric charge. (shock, lightning) | Static Discharge |
The current is a measure of the rate of ______ of a circuit. | Flow |
All devices connected on their own path, each with its own full current. | Parallel Circuit |
All devices connected in one path, all sharing the same current. | Series Circuit |
Materials that behave as a conductor and insulator. (Silicon, Germanium) | Semiconductors |
An iron core wrapped with a current carrying wire to create a magnetic field. | Electromagnet |
How does removing a bulb from a series and parallel circuit differ? | Series Circuit - Removing a bulb opens the whole circuit, parallel Circuit - Removing a bulb only affects the bulb removed. |
How is the brightness of bulbs different between a series and parallel circuit? | Parallel Circuit - The bulbs have their own current and are at full brightness. |
The rate (how fast) electrons move through a circuit. | Current |
The amount of energy behind a moving charge. | Voltage |
Materials that allow heat and electricity through. (Metals) | Conductors |
Materials that do not allow heat and electricity through easily. (Wood, Plastic, Rubber, Glass, Paper) | Insulators (Poor Conductors) |
Converts electrical energy to mechanical energy. | Electric Motor |
Converts mechanical energy to electrical energy. | Generator |
Currents that moves back and forth in a circuit. Made by huge generators in power plants. | Alternating current |
Current that moves electrons in one direction. Made by batteries. | Direct current |