electricity (10) Flashcards
in series the amount of resistors is increased what happens to current
the total current decreases
in parallel what happens when the amount of resistors is increased
the total resistance decreases therefor the total current increases
what effects resistance
- type of material
- length (the longer the wire the more resistance)
- thickness (the thicker the wire the less resistance)
- temperature (the higher the temperature the higher the resistance)
when you measure the potential difference across a battery you are measuring what
the emf
conventional current
from positive to negative
what happens when a battery goes flat
all it’s chemical potential energy has been converted into forms of other energy
in series, what happens with current
current is the same at every point in the circuit
in series, what happens to voltage
the voltage is divided across resistors
in parallel, what happens with current
current splits at different paths
in parallel, what happens with voltage
the voltage is the same across the resistors
ohms law
current through a conductor is directly proportional to the potential difference across the conductor at a constant temperature