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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Definitions:

Risk Premium

The excess return that an investment is expected to generate above the risk-free rate, compensating investors for taking on a higher level of risk.

Arbitrage

The practice of buying an asset in one market and simultaneously selling it in another market at a higher price, thereby profiting from the temporary difference in prices.

Risk-Free Economic Profits

Refers to theoretical profits that an investor can make without taking any market risk, which in reality is very hard to achieve due to market efficiencies.

Short Selling

Short selling is an investment strategy where an investor borrows shares and sells them on the open market, planning to buy them back later at a lower price to profit from the difference.