Home > Class 12 Physics > Quizzes > Class 12 Physics Practice Test: Drift of Electrons and the Origin of Resistivity
Class 12 Physics Practice Test: Drift of Electrons and the Origin of Resistivity
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 70% • Most missed: “A potential difference of 100 V is applied across a conductor of length 50cm. Ca…”
Class 12 Physics Practice Test: Drift of Electrons and the Origin of Resistivity
Time left 00:00
8 Questions

1. Consider a conductor of length 0.5 m. A potential difference of 20V is applied across this conductor. If the drift velocity of electrons is given as 5.0 × 10-4ms-1, then determine the mobility of the electrons.
2. Predict the effect of length of conductor on drift velocity of electrons.
3. Predict the effect of temperature of the conductor on the drift velocity of electrons.
4. A potential difference of 100 V is applied across a conductor of length 50cm. Calculate the drift velocity of electrons if the electron mobility is 9 × 10-5 m2V-1s-1.
5. What is the SI unit of mobility?
6. Calculate the drift velocity of free electrons if a current of 200 A is maintained in a conductor of cross-section 10-3m2. The number density of free electrons is 96 × 1020 m-3.
7. Calculate the drift velocity of free electrons if a current of 200 A is maintained in a conductor of cross-section 10-3m2. The number density of free electrons is 96 × 1020 m-3.
8. What is the SI unit of mobility?

⚡ Recently practiced quizzes in this topic
Live quiz activity
Class 12 Physics Practice Test: Ampere's Circuital Law Class 12 Physics Practice Test: Coulomb's Law Class 12 Physics Practice Test: Magnetism and Gauss's Law Class 12 Physics: Electrostatic Potential and Capacitance Class 12 Physics Practice Test: Combination of Capacitors Class 12 Physics Practice Test: Cells, EMF and Internal Resistance Class 12 Physics Practice Test: Motional Electromotive Force Class 12 Physics Practice Test: Torque on Current Loop & Magnetic Dipole Class 12 Physics: Current Electricity Class 12 Physics: Charges and Fields
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | OSHA Basics Quiz | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.