As you already know, that dynamically transfer electrons can occur in two ways, namely chemical and magnetic induction. How to chemically produce electricity on batteries / accumulators, and the magnetic induction method to produce electricity in a generator. Electricity generated through a chemical process such as dry batteries (dry cell) has a voltage of 1.5 volts with direct current (direct current). In a dry battery, a chemical reaction to generate electricity. If chemicals discharged the battery is also “dead” and discharged.
Electrical generator is a device that produces electrical energy from mechanical energy source, usually by using electromagnetic induction. If the conductor or conductors is driven to cut the magnetic field, it will be resurrected electrical potential or electromtive force (IMF) on the conductor, as diperlihatan in Figure 1.22.
Pictures 1:22 Principle Power Electric Potential (emf)
In Figure 1.22A, conductor magnetic field but do not cut parallel to the magnetic field. At that position, not raised emf in the conductor. But at the conductor position as shown in Figure 1.22B, seen both sides of the conductor cuts the magnetic field. At that position, emf will be raised on either side of the conductor. If both ends of the conductor is connected to an electric circuit, no current flows in the current conductor position in the vertical interval.
Because conductors perform rotary movement, will cut the magnetic field. Then the current will start flowing. If the conductor has spun reached position 90 ° from the horizontal position, the flow reaches the maximum price. Once reaching that point, the flow will shrink back. After reaching the position 90o movement next conductor, no current is generated. If the conductor continues to spin, then the conductor will cut the magnetic field in the opposite magnetic poles.
This will result in currents generated in the conductor will flow in the opposite direction. You will examine the problem of potential generation of electricity at the Basic and Power Measurement 2.
1:23 image current and voltage (emf) turned in a lap anchor
This process is known as electricity generation. Generator push electrical charges to move through an external electrical circuit, but does not create an electric generator that is already in the cable windings. This is analogous to a water pump, which creates a flow of water but does not create the water in it. Mechanical energy source may be a waterwheel or turbine steam engine, water falling through a turbine or waterwheel, an internal combustion engine, a wind turbine, a hand crank, solar or solar energy, compressed air, or any other source of mechanical energy.