A. free electrons
B. free atoms
C. free molecules
D. free solids
Correct Answer: Option A
A. free electrons
Explanation
– Conduction is explained in terms of the free electrons
– Convection is explained in terms of the movement of the fluid involved
– Radiation is explained in terms of invisible electromagnetic waves.
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![An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5ºC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5ºC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]")
