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Electricity 1-3
Topics 1-3 in Electricity
Term | Definition |
---|---|
Electricity | Flow of charged particles |
Parts of an atom | Proton, neutron, electron |
Static electricity | Build up or imbalance of electric charges within or on the surface of a material. |
Current electricity | Steady flow of charged particles |
Electrical discharge | gaining or losing an electrical charge to achieve balance with objects around it |
Grounding | connect object to earth to drain excess electrons |
Ionizing | Uses ions (positive or negative atoms) to neutralize objects |
Neutral charge | equal positive and negative charge |
Positive charge | more protons than electrons |
Negative charge | more electrons than protons |
Law of charges: Opposite charges | attract |
Law of charges: Similar charges | Repel |
Law of charges: neutral and charged | attract |
Cell | one positive and one negative terminal. 1.5V |
battery | multiple positive and negative terminals linked together |
Resistors | slows the flow of electrons |
lamp | load that converts electrical energy to heat and light |
load | converts electrical energy to other types of energy |
motor | converts electrical energy to mechanical (movement) energy |
wire | conductor that allows electrons to flow |
series circuit | one pathway for electrons to flow |
parallel circuit | multiple pathways (called branches) for electrons to flow |
Potential difference | another name for voltage |
voltage | the "pressure" or "power" that electrons carry |
current | the amount of electrons moving through a conductor |
ohms law | R= V/ I |
Ampmeter | used to measure current |
voltmeter | used to measure voltage |
ohms | used to measure resistance |
open circuit | metal contact is broken. Electricity will not flow |
closed circuit | Metal to metal contact is intact and electricity will flow |
Resistance of good conductors | Low resistance |
Resistance of insulators | high resistance |
Water tank= what in a circuit? | battery- similar to what in a water system? |
Water wheel= what in a circuit? | load- similar to what in a water system? |
Water pipe= what in a circuit? | conductor- similar to what in a water system? |
Current symbol | I |
Voltage symbol | V |
Resistance symbol | R |