The design of the thermostat of an electric iron is based on the
PHYSICS
WAEC 2008
The design of the thermostat of an electric iron is based on the
- A. emmision of electrons from metals when heated
- B. increase in size of metals when heated
- C. increase in the density of metals when heated
- D. change in the mass of metals when heated
Correct Answer: B. increase in size of metals when heated
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