Q. A uniform magnetic field $B$ and a uniform electric field $E$, act in a common region. An electron is entering this region of space. The correct arrangement for it to escape undeviated is
A)
B)
C)
D)
Explanation
(c) For undeviated motion $\left| \overrightarrow{F_{e}} \right| = \left| \overrightarrow{F_{m}} \right|,$ which happens when $\overrightarrow{v},\ \overrightarrow{E}$ and $\overrightarrow{B}$ are mutually perpendicular to each other
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.