Magnetic Effects Of Current Question 310

Question: A charge moving with velocity v in X-direction is subjected to a field of magnetic induction in the negative X-direction. As a result, the charge will [CBSE PMT1993]

Options:

A) Remain unaffected

B) Start moving in a circular path Y-Z plane

C) Retard along X-axis

D) Move along a helical path around X-axis

Show Answer

Answer:

Correct Answer: A

Solution:

$ \overrightarrow{F_{m}}=q,(\overrightarrow{v,}\times \overrightarrow{B}) $ When the angle between $ \overrightarrow{v,} $ and $ \overrightarrow{B} $ is 180o, Fm = 0