National Grid

Electrical energy leaves the power station at approximately...

• 25,000 V
• 132 kV
• 230 V

Electrical energy enters the home at approximately...

• 25,000 V
• 132 kV
• 230 V

Electrical energy passes through the overhead cables at approximately...

• 25,000 V
• 132 kV
• 230 V

Step-up transformers...

• improve the efficiency of the national grid
• reduce the voltage to a safe level for the home
• both 

Step-down transformers...

• improve the efficiency of the national grid
• reduce the voltage to a safe level for the home
• both 

When electricity is in high demand, the national grid has to...

• get energy from renewable power stations  such as Dinorwig 
• buy electricity from neighbouring countries such as france
• both

In a fuel power station, the turbine converts the heat from the steam into...

• heat energy
• kinetic energy
• electrical energy

In a fuel power station, the generator converts kinetic energy from the turbine into...

• heat energy
• kinetic energy
• electrical energy

Tags

NGSS.HS-PS3-3

Step-up transformers...

• reduce the current
• increase the current
• increase the power 

The type of current where charges flow in one direction

• Direct Current
• Alternating Current
• Electron Flow
• Voltage