Combination of Resistors: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Combination of Resistors. Understanding the underlying formula is key to arriving at the correct answer below:

Specific resistance (resistivity) is an intrinsic property of the material and its temperature. For conductors, resistivity increases with an increase in temperature due to the increased frequency of collisions of charge carriers. It does not depend on dimensions.