Q.
A uniform electric field and a uniform magnetic field exist in a region in the same direction. An electron is projected with a velocity pointed in the same direction. Then the electron will
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NTA AbhyasNTA Abhyas 2020Moving Charges and Magnetism
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Solution:
As the electron is moving parallel to both the fields, so magnetic force does not affect the electron's motion but electric force (qE) acts opposite to the motion of the electron. Hence, the electron will not be deflected but its speed decreases.