Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

With the rise in temperature, the electrical resistance

Options:

increases for a conductor and a semiconductor

decreases for a conductor and a semiconductor

increases for a conductor and decreases for a semiconductor

decreases for a conductor and increases for a semiconductor

Correct Answer:

increases for a conductor and decreases for a semiconductor

Explanation:

Correct option: increases for a conductor and decreases for a semiconductor

In a conductor, resistance increases with temperature because atomic vibrations increase, obstructing electron flow. In a semiconductor, resistance decreases with temperature because more charge carriers (electrons and holes) are released due to thermal energy.