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In a hydrogen discharge tube, the number of protons drifitin across a cross section per second is `1.0xx10^(18)`, while the number of electrons drifting in the opposite direction across the same cross section is `2.7xx 10^(18)` per second. Find the curernt flowing in the tube. |
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Answer» As electrons and protons are moving in the opposite directions, they will effectively produce current in the same direcition and the total current in the tube is `I = (n_p + n_e)e//t` `=(1.0xx10^(18) +2.7xx10^(18)) xx1.6xx10^(-19)//1` `=3.7xx1.6xx10^(-1)A = 0.592 A` |
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