Untitled Deck Flashcards
(20 cards)
What is voltage?
Voltage pushes current
Voltage is the electrical potential difference that drives the flow of current in a circuit.
What is current?
Current is the flow of electricity
Current is measured in amps (A) and represents the rate of flow of electric charge.
What is resistance?
Resistance slows down the flow of electricity
Resistance is measured in ohms (Ω) and opposes the flow of current in a circuit.
What units are voltage, current, and resistance measured in?
Voltage in volts (V), current in amps (A), resistance in ohms (Ω)
These units are standard in electrical engineering.
What is a circuit?
A complete path for electricity to flow
Circuits can be open or closed, affecting the flow of current.
What is the difference between a series circuit and a parallel circuit?
Series circuits have one path; parallel circuits have many paths
In series circuits, if one component fails, the entire circuit stops working.
Name the different components of a circuit.
Battery, wires, switch, bulbs, resistors
These components work together to allow electricity to flow and perform tasks.
What are conductors?
Materials that let electricity flow easily
Common conductors include metals like copper and aluminum.
What are insulators?
Materials that stop electricity
Examples include rubber, glass, and plastic.
What is Ohm’s Law?
Voltage = Current × Resistance (V = I × R)
This fundamental law relates the three key electrical quantities.
How do you determine current, voltage, or resistance of a circuit?
Use V = I × R; cover the one you need and solve
Rearranging the formula allows solving for any of the three variables.
Name renewable energy resources.
Solar, wind, water (hydro), biomass energy
Renewable resources are sustainable and have a lower environmental impact.
Name non-renewable energy resources.
Coal, oil, natural gas, nuclear fuel
These resources are finite and can have significant environmental consequences.
What are fossil fuels?
Energy sources made from ancient plants and animals
Fossil fuels include coal, oil, and natural gas.
How is electricity generated from hydro sources?
Water turns turbines
Hydro energy is considered clean but can alter ecosystems.
How is electricity generated from solar sources?
Sunlight powers panels
Solar energy is clean but requires sunlight to be effective.
How is electricity generated from wind sources?
Wind spins turbines
Wind energy is clean but depends on wind availability.
How is electricity generated from nuclear sources?
Atoms split to make power
Nuclear energy produces large amounts of energy but creates radioactive waste.
Name the advantages and disadvantages of coal power.
Advantages of coal power:
-Lots of energy.
-Cheap and reliable.
Disadvantages of coal power:
-Creates pollution.
-Causes climate change.
-Non-renewable (will run out).
How to draw circuits ( symbols)
memorize the symbols above
