# Electron in a Solenoid#

A solenoid with 25 turns per centimter carries a current $$I$$. An electron moves within the solenoid in a circle of radius 3.00$$\textrm{ cm}$$. The plane of the circular motion is perpendicular to the axis of the solenoid.The speed of the electron is $$1.50\times 10^{4 } extrm{ m/s}$$ $$\textrm{ m/s}$$.

## Question Text#

What is the current $$I$$ in the solenoid?

$$I=$$ $$\textrm{ A}$$