electricity final quiz Flashcards
static electricity
Static electricity is an imbalance of electric charges within or on the surface of a material
what is charge separation
If two objects have different or same charges, they attract (or pull towards) each other.
what are the attractive forces that act on particles
what is a series versus parallel circuit
In a series circuit, all components are connected end-to-end, forming a single path for current flow.A parallel circuit has two or more paths for current to flow through
how to measure voltage, current and resistance (Ohm’s law)
triangle
V
÷ ÷
I x R
what increases/decreases resistance in a wire
heating a wire increases its resistance. shorter wires will decrease resisitance
what is a variable resistor/rheostat
A variable resistor which is used for controlling the flow of electric current either by increasing or decreasing the resistance.
electrical safety- what is a third prong
The third prong on a plug provides a path to ground for electricity that is straying or leaking from a product
what are step-up and step-down transformers
controls the current
electrochemical cells/batteries–> what are the basic components and how do they work
calculations on energy and efficiency with formulas provided
energy out/energy in x100 = %
what are examples of renewable energy sources and what are the main pros and cons
SOLAR ENERGY
WIND ENERGY
GEOTHERMAL ENERGY
HYDROPOWER
OCEAN ENERGY
BIOENERGY
-cost
