How does electron mobility change when- 1- temperature of conductor is decreadecreased. 2- Applied potential difference is doubled at constant temperature ?

Question

Nicho priyatham · Answer

1)wn temp is increased resistance is increaded so current decreases end electron mobality decreases 2)wn pd is doubled curent increases and electron mobility increases PLZ APPROVE if useful and ask if any further doubts

Adarsh · Answer

The second part of the answer is incorrect.

Khushal Mehta · Answer

1. when the temperature is decreased the relaxation time increases.

As the mobility of electron is directly proportional to the relaxation time so the mobility also increases.

2.The potential difference is inversely proportional to the mobility.So If the potential difference is doubled then mobility gets half.

Kushagra Madhukar · Answer

Dear student, Please find the answer to your question. We know, mobility of electrons(u) = eT/m Where T is the relaxation time, e is electronic charge and m is mass of electron. Now, when Temperature is decreased, the relaxation time being inversely proportional to it increases. Therefore, the mobility also increases. Now, the mobility of electrons is independent of the potential difference. Hence the mobility remains unchanged when potential difference is doubled. Thanks and regards, Kushagra

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

How does electron mobility change when- 1- temperature of conductor is decreadecreased. 2- Applied potential difference is doubled at constant temperature ?

How does electron mobility change when- 1- temperature of conductor is decreadecreased. 2- Applied potential difference is doubled at constant temperature ?

4 Answers

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Electric Current

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship