Final answer:
Electromagnetic waves are generated by oscillating charges through varying currents. They exhibit perpendicular electric and magnetic fields, forming transverse waves.
Explanation:
Electromagnetic waves are produced by oscillating charges that radiate when accelerated. The easiest scenario to understand this is through a varying current in a long wire produced by an AC generator. These waves have electric and magnetic fields that are perpendicular to the wave's direction, making them transverse waves.
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