Question: An electron with speed v enters the region between two charged plates, as shown in the diagram at right. The plates are separated by a

An electron with speed v enters the region between two charged plates, as shown in the diagram at right. The plates are separated by a distanced and are charged by a battery (not shown) to a potential difference of change in V. What must the direction of an external magnetic field be in order for the electron to pass between the plates undeflected? Briefly explain your answer; a response of 'the right hand rule

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