MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
Raghunath Yadav Karike Grade: 12
        

Explain me the whole concept of movement of electrons why it is from low to high potential.


And why more electrons flow againt electric field than in same direction ?

6 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear student,


The difference in voltage between the ends of the resistor produces an electric field. Any electrons which are able to move are then dragged towards the positive (+ve) end and pushed away from the negative (-ve) end. In a vacuum they'd get faster and faster until they smashed into the positive end. However, inside a material they find that the atoms keep getting in the way.

Each time the electrons bump into the atoms of material they tend to lose kinetic energy and bounce off at a random angle. As a result they keep being accellerated by the electric field and 'losing their way' each time they hit an atom. The overall effect is to make them tend to diffuse through the resistor. They squeeze their way passed the atoms, a bit like toothpaste in a tube when you squash it at one end. The harder you squeeze (apply a bigger electric field) the higher their average velocity. Since the current is just a measure of how quickly charge moves along the piece of material we find that the current we get is proportional to the applied voltage.


 





















Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.


All the best.


Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.


Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..


 


Askiitians Expert


Sagar Singh


B.Tech, IIT Delhi




















6 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: R 2,600
  • View Details
Get extra R 2,500 off
USE CODE: SSP11
  • Complete Physics Course - Class 11
  • OFFERED PRICE: R 2,800
  • View Details
Get extra R 2,500 off
USE CODE: SSP11

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details