x Turn on thread page Beta
 You are Here: Home >< A-levels

A2 Physic Electric Field Question watch

Announcements
1. I am kind of confuse about replusive force and attractive force in electric field .
Do They behave in the same way ? I mean in attractive force , i know the closer two charge , the attractive force is stronger and weaker increase in distance .
Does replusive behave in the same way ? Why ?
Moreover , i also know that the electric potential for attractive force increase when the distance increase . Why does the electric potential for replusive decrease when distance increase ?
The two graph in the book really make me confuse . Do you ignore the negative and only focus the magnitude of force in both attractive and negative ?
Ugh ... Electic Field is such a hard chapter . Hard to visualise Hopefully , you guys can give me some example to let me understand
2. (Original post by co2mymail)
I am kind of confuse about replusive force and attractive force in electric field .
Do They behave in the same way ? I mean in attractive force , i know the closer two charge , the attractive force is stronger and weaker increase in distance .
Does replusive behave in the same way ? Why ?
Moreover , i also know that the electric potential for attractive force increase when the distance increase . Why does the electric potential for replusive decrease when distance increase ?
The two graph in the book really make me confuse . Do you ignore the negative and only focus the magnitude of force in both attractive and negative ?
Ugh ... Electic Field is such a hard chapter . Hard to visualise Hopefully , you guys can give me some example to let me understand
Attractive and repulsive forces behave in the same way because they are of the same type.

Electric potential is defined with reference to a positive test charge in the field. Therefore for attractive force, i.e a positive test charge in a an electric field caused by a negative charge, work needs to be done to move the charges from each other (because they are attracted), with the work done resulting in the increase of the electric potential of the test charge, the positive charge in this case. reverse this argument for the repulsive force caused by the presence of two identical charges.
Hope this helps.
3. I did Electric Fields. I don't even know what you're talking about. Oh gawd. What is this
um. What board is this?

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: November 14, 2015
Today on TSR

University rankings 2019

Cambridge at number one

Poll

All the essentials

Student life: what to expect

What it's really like going to uni

Essay expert

Learn to write like a pro with our ultimate essay guide.

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Resources by subject

Everything from mind maps to class notes.

Study tips from A* students

Students who got top grades in their A-levels share their secrets