Practice DRIFT OF ELECTRONS AND THE ORIGIN OF RESISTIVITY - 3.5 | 3. CURRENT ELECTRICITY | CBSE 12 Physics Part 1
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skillsβ€”perfect for learners of all ages.

Typing
Memory
Math
English Adventures
Knowledge

3.5 - DRIFT OF ELECTRONS AND THE ORIGIN OF RESISTIVITY

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is drift velocity?

πŸ’‘ Hint: Think about how movement occurs when there is an electric field.

Question 2

Easy

Define resistivity.

πŸ’‘ Hint: Relate it to how well a material conducts electricity.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the average drift velocity of electrons in a conductor under an applied electric field?

  • It is always zero
  • It is the average speed due to acceleration from the electric field
  • It is the speed of light

πŸ’‘ Hint: Consider how moving electrons interact with an electric field.

Question 2

True or False: Relaxation time is the time between successive collisions of electrons.

  • True
  • False

πŸ’‘ Hint: Think about how frequent collisions affect electron flow.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A copper wire has a diameter of 2 mm and carries a current of 5 A. Calculate the drift velocity of conduction electrons given the density of conduction electrons in copper is approximately 8.5 Γ— 10^28 m^-3.

πŸ’‘ Hint: Use your knowledge of areas and remember to apply the drift formula correctly.

Question 2

Given that the resistivity of a material increases as temperature increases, develop a hypothesis on how the study of resistivity can assist in designing efficient electrical equipment.

πŸ’‘ Hint: Think about how resistivity changes with temperature and why it matters for electrical devices.

Challenge and get performance evaluation