• When electricity passes through a component, such as a resistor, some of the electrical energy is turned into heat therefore increasing its temperature
• This is because energy is transferred as a result of?collisions?between:
  • Electrons?flowing in the conductor, and
  • The?lattice of atoms?within the metal conductor

   

• Electricity, in metals, is caused by a?flow of electrons
  • This is called the?current

   

• Metals are made up of a?lattice?of ions
• As the electrons pass through the metal lattice they?collide?with ions
  • The ions?resist?the flow of the electrons

   

As electrons flow through the metal, they collide with ions, making them vibrate more

• When the electrons collide, they lose some energy by giving it to the ions, which start to vibrate?more
  • As a result of this, the metal?heats up

   

• This heating effect is?utilised?in many appliances, including:
  • Electric heaters
  • Electric ovens
  • Electric hob
  • Toasters
  • Kettles

   

The heating effect of current can be used for many applications such as electric hobs

轉載自savemyexam