Ask a Doubt
Request a call back

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

CBSE Class 12-science Answered

why the electric field at every point is normal to the equipotential surface?
Asked by Subhashree Lenka | 20 Apr, 2015, 08:25: AM
answered-by-expert Expert Answer

Any surface on which the electric potential is the same everywhere is called an equipotential surfaces. 

Hence the potential difference between any two points on an equipotential surface will be, dV= 0

begin mathsize 12px style straight i. straight e space minus straight E with rightwards arrow on top. dl with rightwards arrow on top equals 0 or space minus space straight E space dl space cos space straight theta space equals 0 straight E space and space dl space cannot space be space zero. straight E space not equal to 0 space and space dl with rightwards arrow on top space not equal to space 0 So space cos space straight theta space equals 0 comma rightwards double arrow space straight theta space equals space 90 degree This space implies space that space straight E with rightwards arrow on top space is space normal space to space the space equipotential space surfaces space end style
Hence the electric field at every point is normal to the equipotential surface.
Answered by Jyothi Nair | 20 Apr, 2015, 02:37: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
please give explaination also
question image
Asked by KRISHPATEL.soc | 01 Jul, 2021, 10:39: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Two spherical conductors A and B are having charge densities  σA and  σB respectively. If they are joined by a thin wire then what will be the ratio of charge densities finally if the radii are rA and rB. 
Asked by hitanshu04 | 17 May, 2021, 09:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
in the electric field of point charge q
question image
Asked by thisismiru15 | 30 May, 2020, 11:35: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Equipotential surface for two identical negative charges?
Asked by amarsinghjsr6340jsr | 21 Feb, 2020, 06:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
why is the electric potential constant when electric field is zero> explain me in detail plss
Asked by my3shyll | 17 May, 2018, 07:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
The  equipotential  surface  for  a  point charge  of  1nC  has  potential  of  9V .  find  the  radius  of  equipotential  surface .
Asked by pardeepkumar2281 | 10 May, 2018, 11:15: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What do you know about equipotential surface? Give an example.
Asked by Topperlearning User | 22 Apr, 2015, 02:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What is the shape of equipotential surface for a given point charge?
Asked by Topperlearning User | 22 Apr, 2015, 02:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
How much work is done in moving a 400 μC charge between two points on an equipotential surface?
Asked by Topperlearning User | 22 Apr, 2015, 02:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Give main characteristics of an equipotential surface.
Asked by Topperlearning User | 22 Apr, 2015, 02:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×