In a hydrogen discharge tube, the number of protons drifting across a cross-section per second is 1.0 x 1018, while the number of electrons drifting in the opposite direction across the same cross section is 2.9 x 1018 per second. Find the current flowing in the tube. (charge on each electron is 1.6×10−19 C)
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In a discharge tube the number of protons drifting
In a hydrogen discharge tube, the number of protons drifitin across a cross section per second is 1.0×1018, while the number of electrons drifting in the opposite direction across the same cross section is 2.7×1018 per second
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Explanation:
No. of electrons passing - 2.7×10^18
=> Total charge of electrons = 2.7×10^18× 1.6×10^-19 C
Similarly, no. of protons - 1×10^18
Total charge of protons = 1×10^18×1.6×10^-19C
Therefore, Net Charge - 2.7×10^18×1.6×10-19 + 1×10^18×1.6×10^-1 = 1.6×10^-19 ( 2.7×10^18 + 1×10^18) = 1.6×10^-19 ×10^18( 3.7 ) = 1.6×10^-1 (3.7) = 0.592mA
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