Question

A charged particle with specific charge s moves undeflected through a region of space containing mutually perpendicular and uniform electric and magnetic fields, $E$ and $B$. When the $E$ field is switched off, the particle will move in a circular path of radius

• A. $\frac{E}{Bs}$
• B. $\frac{Es}{B}$
• C. $\frac{Es}{B^2}$
• D. $\frac{E}{B^{2}s}$

Answer 1

Answer: (D)

Correct answer is (d) $\frac{E}{B^{2}s}$