topic 2

Created by

Annabelle Shipway

Cards (33)

what is an electrical field
the physical field that surrounds electrically charged particles
what do step down transformers do
reduce the potential difference
what do step up transformers do
increase potential difference
what is the national grid
a system of transformers and high voltage cables
what is a green/yellow wire in a plug
earth wire- safety wire
what is a blue wire in a plug
nuetral wire
what is the brown wire in a plug
the live wire-extremely dangerous
describe alternating current
current that changes direction consantly
describe direct current
current that flows only in one direction
describe the resistence in parallel circuits
less than the resistance of the smallest inducvidual resistor
describe the resistance in series circuits
resistance in resistors adds together
why are diodes useful
for controlling the flow of current in circuits
what is an ohmic conductor
ohmic conductors are wires or resistors
what is meant by resistance
anything in the circuit that slows the flow of current down
what is meant by a battery
two or more cells connected
describe the current flow in a parallel circuit
the current is split into branches
describe the pattern of a current flow in a series circuit
the current is the same all the way round
what is this
a thermistor
what is this
a parallel circuit
what is this
a series circuit
what is this
an LED
what is this
a light dependent resistor
what is this
a fuse
what is this
a voltmeter
what is this
an ammeter
what is this
a diode
what is this
a lamp
what is this
a cell
what is this
a battery
what is this
open switch
what is this
closed switch
what is this
a variable resistor
what is this
a fixed resistor