Growth factors are organized into three categories. Some bacteria (e.g. E. coli) do not require any growth factors: they can synthesize all essential purines, pyrimidines, amino acids and vitamins, starting with their carbon source, as part of their own intermediary metabolism.
The inductor is a conductor, usually a coil of wire, that stores energy in a magnetic field in response to the current through it. When the current changes, the magnetic field does too, inducing a voltage between the ends of the conductor.The induced voltage is proportional to the time rate of change of the current.he electric potential at any point is defined as the energy required to bring a unit test charge from an infinite distance slowly to that point. It is usually measured in volts, and one volt is the potential for which one joule of work must be expended to bring a charge of one coulomb from infinity.
In a system of two interacting objects, each exerts itself on the other. Consequence is that potential energy is defined for the system. The potential energy mgh (see below) that the object possesses in the earthâs gravitational field is actually the potential energy of the earth-object system. If the object falls towards the centre of the earth, an equal magnitude of force acting on the earth will induce motion in the earth also.