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A current is established in a gas discha...

A current is established in a gas discharge tube where a sufficiently high potential difference is applied across the two electrodes in the tube. The gas ionises , electrons move toward positive terminal and positive ions toward the negative. What are the magnitude and sense of the current in a hydrogen discharge tube in which `3.1 xx 10^18` electrons and `1.1 xx 10^18` protons move past a X-sectional area of the tube each second ?

A

0.67 A

B

0.76 A

C

1A

D

1.67

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