2021

• equation linked with current,pd,resistence

  V=IR
• equation linked to energy,power,time

  E=P$\times$t
• thermistor

  thermistor

  
• temp increases

  pd is constant

  current increases cus the

  resistance decreases
• alpha particle is same as helium nucleus

  how many times bigger is the radius of a helium atom than the radius of an alpha particle

  more than 10 000 times bigger
• alpha particles ionise in the air.

  What happens to an atom when it is ionised by an alpha particle

  -the atom becomes a positive ion

  -The atom loses an electron
• why can't a spark detector detect beta radiation

  Beta radiation is only weakly ionising
• renewable energy

  -solar

  -waves

  -tidal

  -wind
• the battery can be changed by a wind turbine or generator Why is it useful?

  -no wind ,still can be charged

  -less wind ,fuel is burned
• One environmental impact of using fossil fuels to generate electricity

  the CO$_2$ released increases global warming.
• zero error

  a number is written -has to start on 0
• name given to the energy needed to change the state of the liquid coolant

  latent heat of vaporisation