In a neon discharge tube 2.9 xx 10^(18) ...

In a neon discharge tube `2.9 xx 10^(18) Ne^(+)` ions move to the right each second while `1.2 xx 10^(18)` eletrons move to the left per second. Electron charge is `1.6 xx 10^(-19) C`. The current in the discharge tube

1A towards right

0.66A towards a right

0.66A towards left

zero

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