Pick one of corners of the triangle that is not the right-angle corner. From that corner identify the Opposite side "O", the side not touching your chosen corner.

In this video David shows how to find the total electric potential at a point in space due to multiple charges.

In this video David solves an example 2D electric field problem to find the net electric field at a point above two charges.

Learn how to combine series and parallel resistors to reduce the complexity of a circuit.

Force of gravity is opposite to the direction of lifting the stone. Electric field forces point in the same direction (opposite charges naturally attract).

Since vector addition forms a triangle, we can think about angles that are formed at the intersections. We know that the larger the angle, the larger the side opposite to it.

Definition of the electric field. Electric field near a point charge. Coulomb's Law describes forces acting at a distance between two charges. We can reformulate the problem by breaking it into two distinct …

The electric field strength due to a dipole, far away, is always proportional to the dipole moment and inversely proportional to the cube of the distance. Dipole moment is the product of the charge and …

Learn the skills that will set you up for success in congruence, similarity, and triangle trigonometry; analytic geometry; conic sections; and circles and solid geometry.

The Delta-Wye transformation is an extra technique for transforming certain resistor combinations that cannot be handled by the series and parallel equations. This is also referred to as a Pi - T …