Science assessment task 4 (unfinished)

Physics (electrical components), biology (homeostasis, disease, immunity), chemistry (organic/inorganic compounds, chemical formulas, combustion), sustainability (biodiversity, ecosystems)

elements of a complete circuit

conductive path, source of electrical power, load

current

flow of moving charges

conventional current

the flow of positive charge

current is measured in?

amperes (amps) A

resistance

opposition to flow of electrical current

resistance is measured in?

ohms (Ω)

ohm's law

V = IR

parts of the central nervous system (CNS)

brain, spinal cord

parts of the peripheral nervous system (PNS)

billions of nerves

advantages of series circuit

easy to assemble, current flows through all parts, uses less battery

disadvantages of series circuit

if one part of the circuit breaks the whole thing stops, voltage is split, no independent control

advantages of parallel circuits

same voltage, different switches, independent operation

disadvantages of a parallel circuit

hard to wire, uses more materials, uses more battery