MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12
        
electric field e and electric potential v are relate as
 
one month ago

Answers : (2)

Arun
22989 Points
							
Dear Student
 
The electric field = - potential gradient.
It comes from expressing energy changes in two different ways.
You can say work done = force x distance = qE x distance
However you can also say the work done = change in potential x charge moved = qV
If you equate these two different ways of expressing the same energy change you get
>qE x distance (d) = qV .. the q s cancel
>E x d = V
>E = V/d which is the potential gradient. The minus sign comes from the distance moved for a positive charge opposite the foield counts as being negative. ( You really need vectors to doi it properly).
>**To get a feel for this:**
>Lets consider gravity and a ball on a slope. The effective gravitational field could be indicated by the acceleration of the ball down the slope.
>The change in potential = mg(delta h) ie it depends on the change in height.
>so the ‘field = - potential gradient’ means the ball accelerates down the hill faster where the height changes a lot in a short distance.
>ie the ball accelerates down a steep hill. This is a very close analogy to electric fields and potentials.
 
one month ago
Vikas TU
9476 Points
							
 
Dear student 
E x d = V
E = V/d which is the potential gradient. The minus sign comes from the distance moved for a positive charge opposite the foield counts as being negative. ( You really need vectors to doi it properly).
Good Luck 
one month ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

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