1. The National Grid Mains electricity is produced by ______________.
Magnet Voltage Opposite Out Generator Circuit Electromagnetic Current Induced Coil
The National Grid
Mains electricity is produced by ______________.
Generators produce a ___________ by a process called _____________________ induction.
When a ___________ is moving into a coil of wire, a voltage is ___________ across the ends coil.
If the ends of the ______ are connected to make a closed _________, a _________ will flow round the circuit.
If the magnet is moving _____ of the coil, or the other pole of the magnet is moving into it, there is a voltage induced in the ____________ direction.
Charles Merz opens the first UK major ___________ ____________ in 1901.
In 1933 the Central Electricity Board sets up the UK’s first nationwide __.___. grid.
The grid is updated in 1965 by adding 400kV _______.
Voltage of electricity produced in ________ _________ is about 23kV.
Transformers either ________ or ________ the voltage.
UK National Grid
The number of GW (1.3 EJ) used annually in the UK is ______ TWh.
Mains electricity is produced by ___________.
First nationwide _________ grid ran at 132kV, 50Hz.
Mains __________ is in a.c. supply.
A ______________ can change the size of an alternating __________.
ELECTRICITY CANNOT BE ___________ !
kV: ________________
GW: ________________
TWh: _______________
EJ: _________________
Hz: _________________
Power = Potential Difference x ____________
Mains supply to our homes is __________ volts.
X 100
__________ = Energy usefully transferred
Total energy supplied