An Electron Is Launched with Velocity in a Uniform Magnetic $\theta$

question 15

Multiple Choice

An electron is launched with velocity in a uniform magnetic field .The angle $\theta$ between and is between 0 and 90^o.As a result, the electron follows a helical path.The pitch of the helix is:

• A)the angle the helix makes with the magnetic field
• B)the angle the helix makes with the electron's velocity vector
• C)the radius of the circular motion
• D)the distance between adjacent turns of the helix
• E)the time it takes the electron to move from one turn of the helix to the next

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