Electric field (article) | Electrostatics | Khan Academy
The electric field direction points straight away from a positive point charge, and straight at a negative point charge. The magnitude of the electric field falls off as 1 / r 2 going away from …
Calculate pot. difference in uniform fields - Khan Academy
Electric field strength = - potential gradient. Let's use this to calculate potential differences in uniform electric fields.
Electric field (video) | Electrostatics | Khan Academy
Charges shape the space around them, forming an electric field that interacts with other charges. The tutorial covers Coulomb's Law, electric field lines, and the role of distance in field strength.
Magnitude of electric field created by a charge (video) | Khan …
Learn about the formula used to find the magnitude and direction of the electric field between two point charges, and see two examples of how to calculate the magnitude of an electric field.
Electric flux meaning (& how to calculate it) - Khan Academy
Electric flux measures how much the electric field 'flows' through an area. The flow is imaginary & calculated as the product of field strength & area component perpendicular to the field. …
Electric potential, voltage (article) | Khan Academy
Formal definition of electric potential and voltage. Coulomb's Law lets us compute forces between static charges. Now we explore what happens if charges move around. We find out what it …
Magnetic flux and Faraday's law (article) | Khan Academy
Learn what magnetic flux is, how to calculate it, and how it relates to Faraday's law.
What are magnetic fields? (article) | Khan Academy
Arranging many small compasses in a grid pattern and placing the grid in a magnetic field illustrates this technique. The only difference here is that a compass doesn't indicate the …
Electric field due to spherical shell of charge - Khan Academy
Now we can equate both sides of Gauss's law & calculate the electric field strength inside the shell.
Net electric field from multiple charges in 2D - Khan Academy
In this video David solves an example 2D electric field problem to find the net electric field at a point above two charges.