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 i

Nicho priyatham

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

Approved

Last Activity: 10 Years ago

Adarsh

The second part of the answer is incorrect.

Last Activity: 10 Years ago

Khushal Mehta

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.

Last Activity: 7 Years ago

Kushagra Madhukar

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

Last Activity: 5 Years ago

Electric Current> How does electron mobility change when- 1...

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

Kanak , 10 Years ago

Nicho priyatham

Adarsh

Khushal Mehta

Kushagra Madhukar

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Electric Current> How does electron mobility change when- 1...

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

Kanak , 10 Years ago

Nicho priyatham

Adarsh

Khushal Mehta

Kushagra Madhukar

LIVE ONLINE CLASSES

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