In a tv, electrons are accelerated from rest through a potential difference of 1

Question

In a tv, electrons are accelerated from rest through a potential difference of 19kV. The electrons then pass througha 0.28 magnetic field that deflects them to the appropriatespot on the screen find the magnitude fo the maximum magnetic forcethat an electron can experience? In the second step of thesolution mass is found to be 9.1x10^-31 kg. Wheredid this number come from? In a tv, electrons are accelerated from rest through a potential difference of 19kV. The electrons then pass througha 0.28 magnetic field that deflects them to the appropriatespot on the screen find the magnitude fo the maximum magnetic forcethat an electron can experience? In the second step of thesolution mass is found to be 9.1x10^-31 kg. Wheredid this number come from?

Explanation / Answer

It is simply the mass of an electron. It was looked up for thisproblem. In this problem there is 1 equation and 1 unknown to solvefor, so the mass has to be looked up (wikipedia or googlesearch).

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