A narrow electron beam passes undeviated through an electric fiel… - Vidyadip

Question

A narrow electron beam passes undeviated through an electric field E = 3 and an overlapping magnetic field B = 2 . If electric field and magnetic field are mutually perpendicular. The speed of the electrons is

(a) 60 m/s

(b) 10.3

(c) 1.5

(d) 0.67

✓

Answer

(c) 1.5

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