If your equation is in vertex form, then the axis of is: x= h in the general vertex form equation y = (x-h)2 + k. If your equation is in standard form, then the formula for the axis of symmetry is: $$ x = \frac {-b}{ 2a} $$ from the general standard form equation $$ y = ax^2 +bx + c $$.
Lesson Summary. All magnetic fields are created by moving charged particles. Stationary charged particles do not generate magnetic fields. An electromagnet is a magnet that relies on an electric current to produce the magnetic field. The simplest electromagnet is simply a wire carrying a current, which generates a magnetic field all around the wire.
Answers. Best Answer: The following is in relation to an electromagnet, but generally applies to magnetic fields generated by electric current. The magnetic field is proportional to the current in amps and the number of turns of the conductor about the core (ampere-turns).nswers. Best Answer: The following is in relation to an electromagnet, but generally applies to magnetic fields generated by electric current. The magnetic field is proportional to the current in amps and the number of turns of the conductor about the core (ampere-turns).