Revision
define energy
ability/capacity to do work
role of a power supply
provides electrical energy
draw symbol for load/globe
--(_n_)--
or
--(X)--
Draw the symbol for a voltmeter
--(V)--
What voltage is supplied to your homes
230V - 240V
An object/material that easily transfers energy
Conductor
what is the unit for resistance
Ohm
name three components needed to make a circuit
battery
wire
load (light globe)
Draw the symbol for ammeter
--(A)--
What type of current flows between homes and power stations
Alternating Current
An object/material that prevent movement of energy
Insulator
What component allows electrons to move in a circuit
wire
What does resistance do in a circuit
slows down current
What does the ammeter measure and what is the unit
current (flow) of electron
amperes (Amps)
Name an electric safety feature in your home
Fuse
Circuit breaker
Safety switch
Electricity moving in a circuit falls under what category of energy
Kinetic
how is static electricity generated
friction
two objects rubbing against each other
finish the sentence
In a series circuit, all components are connected to form a single ________
Loop
a voltmeter is connected in ______ to a circuit
Parallel
LED has a ___% conversion rate to light
70%
what type of energy is stored in a battery
chemical potential energy
Electron
what happens to a series circuit, if one load breaks
whole circuit stops working
no flow of electrons
what happens to brightness of a globe when lights are added in series
decreases
What is the function of the earth socket
stops electrocution from faulty appliances