A uniform electric field and a uniform magnetic field are produced, pointed in the same direction. An electron is projected with its velocity pointing in the same direction
AIEEE 2005, Easy
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(d) Since electron is moving is parallel to the magnetic field, hence magnetic force on it ${F_m} = 0$.
The only force acting on the electron is electric force which reduces it’s speed.
The only force acting on the electron is electric force which reduces it’s speed.
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