Velocity selector field
In a second version of the same physics investigation, a charged-particle beam in a charged-particle beam tube passes undeflected through crossed fields. Its speed is \(65\,\text{m s}^{-1}\) and magnetic field strength is \(0.55\,\text{T}\). Calculate the electric field strength. Use the diagram first, then calculate the requested value. Enter the numerical result and choose the interpretation that matches the physics meaning.
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