question_answer

A charge q moving in a staight line is accelerated by a potential difference V. It enters a uniform magnetic field B, perpendicular to its path. Then the radius of the circular path in which it travels will be:

A) \[\sqrt{\frac{2mV}{q{{B}^{2}}}}\]                  

B) \[\sqrt{\frac{mV}{q{{B}^{2}}}}\]

C) \[\sqrt{\frac{q{{B}^{2}}}{2mV}}\]                  

D) \[\sqrt{\frac{q{{B}^{2}}}{mV}}\]