0

Guest

Courses New

Find the work done in bringing a charge +q from infinity to a distance "a" from a charge +Q (using integration)? I tried it but the sign of my work was +ve which is incorrect (it should be -ve), can someone find what i did wrong ?

Find the work done in bringing a charge +q from infinity to a distance "a" from a charge +Q (using integration)?
I tried it but the sign of my work was +ve which is incorrect (it should be -ve), can someone find what i did wrong ? 

Question Image
Grade:10

2 Answers

Vikas TU
14149 Points
4 years ago
Dear student 
You have done mistakes in taking the imit of integration. 
It will be from a to infinity, 
which will give you extra negative sign in your result.
If you are taking it from infinity to a then add extra negative sign.
Good Luck 
Chinmay
11 Points
4 years ago
Why would the limit be from a to infinity.
We are bringing +q from infinity to a. 
So r vector initial is infinity and r vector final is a. 

Think You Can Provide A Better Answer ?

Other Related Questions on Electrostatics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More