Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

<div>What is the microscopic form of ohm's law ?</div>
Asked by NAKSHATRA | 04 Aug, 2014, 06:36: PM
Expert Answer
The microscopic form of Ohm's law is J =σ E, where σ is the electrical conductivity, E the electric field and J the current density .
This form of Ohm's law operates on a microscopic level relating the current density J to the conductivity σ and the electric field E.
 
We know that the current I = A nevd 
             where A is the area of cross-section ,n the number density of electrons, e the charge on each electron and vd the drift velocity of electrons.
 
Current density J at a point in a conductor is the amount of current flowing per unit area of the conductor around that point provided the area is held in a direction normal to the current.
Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.
Answered by Jyothi Nair | 05 Aug, 2014, 10:21: AM
CBSE 12-science - Physics
Asked by hv200613 | 20 Oct, 2021, 11:36: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by donthagounisaigoud | 05 Nov, 2020, 01:47: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by yeshuyashwanth219 | 20 Jul, 2020, 07:00: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by neelam.vishva | 25 Jan, 2019, 09:14: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 17 Apr, 2014, 01:49: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT

Start your hassle free Education Franchisee and grow your business!

Know more
×