2022

• to reduce carbon emissions

  Reduce the use of coal and gas
• a network of transformers and transmission cable transfers electrical power from power stations to consumers.

  called the national grid
• How does using the step-up transformers make the network efficient

  PD increases and the current is reduced so, so less energy loss to the surroundings
• risk of using an equipment(heater/fire etc..)

  burning
• equation linked to power,time,energy

  power=$\frac{e}{t}$
• What electrical component is used to monitor the temp of the vegetable oil

  thermistor
• pressure measured in atmospheres

  1 atmosphere is 10$^5$ pascals(Pa)

  1 atmosphere in kilopascals(kPa) is

  1 atmosphere =100kPa
• current only flows in one direction so

  reverse the connections to the LED
• what happens when a xenon atom emits light

  electrons in the atom fall to a lower energy level
• why is beta radiation in a smoke detector more hazardous than alpha R

  Beta radiation is more penetrating than alpha radiation so beta radiation could irritate people passing near the smoke detector
• alpha particle

  +4 on top

  +2 on bottom