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In a discharge tube, the number of proto...

In a discharge tube, the number of protons drifting across a cross-section is `1.5xx10^(18)` per second, while the number of electrons drifting in opposite direction across that cross-section is `3.0xx10^(18)` per second. Find the total current crossing the given cross- section.

Text Solution

Verified by Experts

Here `n_(p)//t =1.5 xx 10^(18)`,
`n_(e)//t=3.0 xx 10^(18) , e=1.6xx10^(-19)C`
Current `I=((n_(e)+n_(p))/(t))e`
`=(1.5xx10^(18) +3.0 xx 10^(18))xx1.6xx10^(-19)`
`=1.15A`
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