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. Then,

Options

A. The electron will turn to its right
B. The electron will turn to its left
C. The electron velocity will increase in magnitude
D. The electron velocity will decrease in magnitude

Answer

D

Explanation

If `vecv || vecB , vecF_(B) =0`
And e move in opposite direction of `vecE`so velocity decreases.