CIE IGCSE Physics

Revision Notes

2.2.4 Thermal Capacity

What is Thermal Capacity?

  • The thermal capacity of an object is the amount of heat energy required to raise the temperature of that object by 1 °c
  • The greater the thermal capacity of an object, the more heat energy it takes to raise its temperature
  • The thermal capacity is also equal to the amount of heat energy an object will give out when it cools by 1 °c
  • The energy, E, required to raise the temperature of an object by an amount T is given by the equation:
E = thermal capacity × T
Extended Only

Thermal Capacity & Specific Heat Capacity

  • The thermal capacity of an object is related to the specific heat capacity (see next page) by the equation:
thermal capacity=m × c

            (where c is the specific heat capacity of the material the object is made from, and m is the object’s mass)

 

 

Exam Question: Thermal Capacity

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