Question

The resistance of a metal increases with increasing temperature because

• A. the collisions of the conducting electrons with the electrons increase
• B. the collisions of the conducting electrons with the lattice consisting of the ions of the metal increase
• C. the number of conduction electrons decreases
• D. the number of conduction electrons increases

Answer 1

Answer: (B)

The resistance of a metal increases with increasing temperature this is because, with increase in temperature the ions of the conductor vibrate with greater amplitude and the collision between ions and electrons becomes