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  4. A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving

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Q. A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving

AMUAMU 2015Electromagnetic Waves

Solution:

Electromagnetic wave contains both electric and magnetic field. When electron is placed, it experience force due to electric field because of which it start moving along the electric field. Force due to magnetic field is zero.