Heat Transfer - Conduction and Convection: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Heat Transfer - Conduction and Convection. Understanding the underlying formula is key to arriving at the correct answer below:

Assertion (A) is true, free electrons are primary carriers of heat in metals. Reason (R) is true;

Electrons have higher velocity due to smaller mass at same kinetic energy. This high velocity enables efficient heat transfer, explaining (A). Both are true and (R) explains (A).