If 40 $\times$ 10¹⁸ Electrons and 1 $\times$ 10¹⁸ Protons Move in Opposite Directions Past a Given Cross

question 14

Multiple Choice

If 4.0 $\times$ 10¹⁸ electrons and 1.5 $\times$ 10¹⁸ protons move in opposite directions past a given cross section of a hydrogen discharge tube every second,the average current in the tube is

• A)0.40 A
• B)0.56 A
• C)0.88 A
• D)1.5 A
• E)4.0 A

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