# Equation of an Ellipse Referred to Two Perpendicular Lines

Equation of an Ellipse Referred to Two Perpendicular Lines Consider the ellipse . Let P (x, y) be any point on the ellipse. Then PM = y and PN = x. . If follows from this if the perpendicular distance P₁ and P₂ of a moving point P (x, y) from two mutually perpendicular coplanar Read more about Equation of an Ellipse Referred to Two Perpendicular Lines[…]

# Current Density

Current Density Current density is a point is defined as the amount of current flowing per unit area round that point provided area is normal to the direction of current. It is denoted by J. Current Density (J) = Current (I)/ Area (A). The unit of current of current density is A/ m². Current density Read more about Current Density[…]