Magnetic Effects Of Current Question 329
Question: An electron (charge q coulomb) enters a magnetic field of H $ weber/m^{2} $ with a velocity of $ v,m/s $ in the same direction as that of the field the force on the electron is [MP PET 2000]
Options:
A) Hqv Newton?s in the direction of the magnetic field
B) Hqv dynes in the direction of the magnetic field
C) Hqv Newton?s at right angles to the direction of the magnetic field
D) Zero
Show Answer
Answer:
Correct Answer: D
Solution:
$ \overrightarrow{F}=q(\overrightarrow{v,}\times \overrightarrow{B})=0 $ as $ \overrightarrow{v,} $ and $ \overrightarrow{B} $ are parallel.
BETA
