- #1
astronomophosis
- 5
- 0
A singly charged lithium ion is accelerated by an electric field E=10i V/m applied between two plates ten centimeters apart. After passing through a small hole in the negative plate, the ion enters a region of space where there is a magnetic field B=5j mT. The ion moves in a circular path. What is the radius of this circle? The answer to this problem is 7.06 cm. How is this found?