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AC Voltage Generation – continued.
This figure illustrates what we discussed in the last page.
In A, the loop conductors are parallel to the lines of force, therefore no voltage is generated.
As the conductor rotates clockwise, it gets to position B, at this time a lot of lines are being cut. Therefore a voltage is generated in the coil. At position A the voltage is zero, and it gradually gets to the maximum point when the conductor reaches position B.
In position C, we again have conductors moving in parallel to the lines of magnetic field, therefore, no lines are being cut and no voltage is being produced. This means that as the conductor moves from position B to C, its voltage drops from maximum to zero.
Similar actions are repeated in positions D and E. The only difference is that now the conductor movement is in an opposite direction to what it was before. The dark conductor is moving upward and the light one is moving downward. Therefore the direction of the induced voltage is opposite to what it was before.