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VITEEE 2012 Solved Paper

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Question : 20

Total: 120

In a hydrogen discharged tube it is observed that through a given cross-section 3.13 x 1015 electrons are moving from right to left and 3.12 x 1015 protons are moving from left to right. What is the electric current in the discharge tube and what is its direction?

1 mA towards right
1 mA towards left
2 mA towards left
2 mA towards right

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