When is maximum voltage induced into a conductor cutting a magnetic field?

The correct answer is that maximum voltage is induced into a conductor when it is cutting through a magnetic field at an angle of 90 degrees. This principle is based on Faraday's Law of Electromagnetic Induction, which states that the induced voltage in a conductor is directly related to the rate of change of the magnetic flux through the conductor.

When a conductor approaches a magnetic field at a right angle (90 degrees), it maximizes the amount of magnetic flux that the conductor cuts through. This is because the effective area through which the magnetic lines of flux pass is at its greatest. As the angle decreases from 90 degrees to 0 degrees, the amount of magnetic flux being cut by the conductor diminishes, resulting in less induced voltage.

At angles such as 0 degrees or 180 degrees, the conductor is either parallel to the magnetic field lines or moving in the opposite direction, which results in no change in magnetic flux and consequently no induced voltage. Therefore, the optimal position for inducing maximum voltage in a conductor is indeed at 90 degrees to the magnetic field.