Electric Field Mapping


Electric field is the force per unit charge and the direction of the force is taken to be the direction of the force it would exert on positive charge. It radiates outward form a positive point charge and inward from an inward point charge.

Electric fields do exist but it’s an invisible entity that exists around an area of a charged particle called a source charge. The electric field and electrical potential are related with the fact that electrical potential describes the field action on an object. For a uniform field, the relationship between electric field (E), potential difference between points A and B (Δ), and distance between points A and B (d) is and its units is the inverse of coulomb.


Experiment objective

The main objective of this experiment is to map the electric field in various situations using the simulation software PHET.

procedure ONE

  • Set the PHET simulation charges and fields.
  • Clicked the reset swirly option. Turned off the electric field and the grid
  • Dragged 1 positive, red and 1 negative blue charge from the bottom box and placed them on the main window 3 major grid lines the thicker ones a part. Dragged the equipotential tool onto the window and maneuvered the crosshairs to a point between the charges and the 1 minor gridline away from positive charge. Clicked the pencil icon.
  • Moved 1 minor grid line towards the negative charge and clicked on pencil icon again.
  • Continued doing this till I reached the pencil icon.
  • On bottom right of screen placed a 3 bar menu, opened it and took screen shot below.

PROceedure two

  • Clicked the reset swirly, turned off the electric field an turned on the grid.
  • Stacked two of each charge and one major grid line apart.
  • Created ten equipotential in the space around the charges.
  • Observed the shapes and line density in space around the charges
  • Added more of each charge above others.
  • Repeated the pacing of ten equipotential.
  • Added five more charges above the others.
  • Observed the shape and line density in the space around the charges.
  • Took a screen short

Procedure three

  • Closed the PHET simulator.
  • Printed the image which data collected with overbeck apparatus


Procedure one

The equipotential behave like concentric spherical shells and the distance between the shells keep changing with the influence of electric field between charges. The potential of a point charge is the same on imaginary sphere and thus has the same value at any point that is from the charge. Since electric fields lines always points radially away from charge they will be perpendicular to the equipotential lines. The sketch of electric field line is as shown below.



Procedure two

The equipotential lines are spherical and reduce as the distance of field lines decreases. The equipotential density is more constricted at the grids between the negative and positive charges.


Procedure three

The overbeck apparatus captured image.

Task 3

Difference between conductors and non-conductors

Conductors have electrons moving freely from atom to atom whenever a potential is applied across it therefore easy charge movement whereas nonconductors have their electrons fixed due to atomic level forces and hence no easy charge transfer.

What can electrons in a conductor that electrons in non-conductor cant?

Move freely from atom to atom

How electrons do responds Coulomb force

Coulomb force is the interaction attraction or repulsion of particles or objects because of their electric charges. Conductors contain free charges that move easily. When excess charge is placed on a conductor or the conductor is put into a static electric field, charges in the conductor quickly respond to reach a steady state called electrostatic equilibrium. The free charges move until the field is perpendicular to the conductor’s surface. There can be no component of the field parallel to the surface in electrostatic equilibrium, since, if there were, it would produce further movement of charge. Free charges can be either positive or negative and are, in fact, negative in metals. The motion of a positive charge is equivalent to the motion of a negative charge in the opposite direction.

Electric field in conductors.

A conductor placed in an electric field will be polarized. Figure 2 shows the result of placing a neutral conductor in an originally uniform electric field. The field becomes stronger near the conductor but entirely disappears inside it.

Figure 2. This illustration shows a spherical conductor in static equilibrium with an originally uniform electric field. Free charges move within the conductor, polarizing it, until the electric field lines are perpendicular to the surface. The field lines end on excess negative charge on one section of the surface and begin again on excess positive charge on the opposite side. No electric field exists inside the conductor, since free charges in the conductor would continue moving in response to any field until it was neutralized.


Is it possible for electric field lines to cross each other?

This is because at any point, if electric field lines cross each other it means at that point there are two directions of electric field, which is impossible.


Electric field of same charges particles.

For both which are negative charges the direction of the electric would been inwards to the center of the charges.

Relationship of electric field strength with to equipotential lines.

Equipotential lines are like contour lines on a map which trace lines of equal altitude. In this case the “altitude” is electric potential. Equipotential lines are always perpendicular to the electric field. Movement along an equipotential surface requires no work because such movement is always perpendicular to the electric field.

Electric field inside a conductor and insulator

A conductor is a material in which charges are free to move over macroscopic distance, they can leave their nuclei and move around the material. An insulator has their charges fixed. In an insulator the charge distribution in an atom may change, but the charges do not leave their nuclei. When we consider electrostatics, the case where charges are not moving. There can be no electric field inside a conductor. If there were, it would exert a force on the charges causing them to move. They would adjust until there was no field, there can be no net charge at any point inside a conductor.

Calculate your paper price
Pages (550 words)
Approximate price: -

Why Essay-writing.com

Quality Research Papers

If you’re looking for an Essay writing service to help turn all of your hard work into a product that readers can appreciate, then look no further than our essay writing website. With a team of writers who go the extra mile, and customer support representative’s around-the-clock eager to assist you, we are ready to ace any exam or provide any posterity with what they need.

Top Assignment Writers

Our essay writers are experienced professionals who have the knowledge to write an essay about any subject matter in an interesting way while maintaining academic integrity. Our professional essay writers work day and night to ensure that you receive quality essays on time without any delay or interruption. With many years of experience behind us, our essay writing website is now led by professionals with extensive knowledge in various fields of study.

Zero Plagiarism

For any write my essay for me request, you will never need to worry about plagiarism or getting caught up in the stress of completing assignments when you use our professional services! Get started today by ordering your first paper from us and we'll give you 10% off!

24/7 Customer Support

We are available 24/7, 365 days a year to help you out with your academic needs! if you have any "do my paper" questions or technical concerns, simply chat with one of our essay writing customer service representatives via the Chat Window on the bottom right corner of this screen

Prompt Delivery and 100% Money Back Guarantee

These academic experts are distinct from most other essay writing websites because they have doctoral degrees and decades of professional experience in academia. And because they know how overwhelming college life can be, we waive all minimum deadlines so you can focus on studying without worrying about your assignment always hanging over your head.

Free Revisions

Our Academic writers are confident and highly capable to take on any challenge ranging from a simple high school essay, question and answer assignment help, PowerPoint Presentation, research paper, dissertation, among others . However, we do not allow customers who abuse the free revisions privilege.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

When the world rushes and deadlines increase, it's hard to put your best foot forward. Essay-writing.com is here to help you with top quality essays on all topics, from history papers and engineering design descriptions to sociology case studies. For any write my essay for me request, you can count on a professional team of essay writers who are well experienced and researched in their field as they develop an original paper for you with 24/7 customer support.


Homework Help Service

Essay-writing.com is an excellent solution for all your problems regarding writing an outstanding admission essay. You don't need to worry about anything anymore because we will provide you with high-quality papers written by expert writers who know how to write professionally!


Paper Formats and Types

From time management skills to APA format citations; from MLA formatting rules for research papers; from college application essays where the stakes are high--all these aspects of academic life become clearer as we write it all down on paper! Essay-Writing.com is a professional essay writing service that provides students with well-researched, high quality essays on any topic and at any level of study.


Editing & Proofreading

Some of our clients prefer to write their essays themselves and have a third-party like Essay-writing.com proofread it for errors after they are done writing. We have a skilled team of editors who examine your paper closely, looking out for any mistakes that may lessen the appeal or effectiveness of the essay as well as make amends in order to better improve its overall quality before you submit it anywhere else! For all your editing needs, turn to Essay-writing.com


Revision Support

You work hard at your academics, and you should be rewarded, with a revision or modification for free on any order from a discursive essay , assignment to dissertation papers.