Electric Generator

Loop in Fig. 6-50A not across the magnetic lines of force. It runs parallel to them. No emf is created in the loop during the interval is in this position. Figure 6-50B shows the loop so that two sides, cut across the magnetic field. In this position, emf will be generated in both sides of the loop.

If the two ends of the loop connected to the electric circuit, no current will flow if the cycle vertically. As the loop starts to rotate, he will cut across the magnetic field. Current will flow. When the cycle turns 90 and horizontally, current reaches its maximum. Once past this point, the current decreases. Another 90, the current will not be created. The cycle then continues to rotate. It cuts through the magnetic field on the opposite poles of a magnet. This will lead to the current generated in the loop flow in the opposite direction.

Electric generator has a revolving conductor (anchors). Wires of the generator of the first cut of the magnetic field in one direction, then in another. This creates an alternative (or the opposite) flow. It happens every revolution anchor, as conductors are the magnetic poles and generate alternating current (ac). However, switches, and brushes for generators DC elimination (correction) of the current leaving generator. The current flows in one direction only.

As the current flows from the generator magnetic field surrounding the conductor in which the current is generated. This field against the motion of a conductor through the field generator. The greater the current, produced, the more the power required to drive the generator. It takes a lot of energy to drive the generator while it produces the current.

This principle is stated in Lenz's Law: "the influence of the magnetic field around the conductor, in which the current is induced opposes the traffic, current is induced.

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