An Electron Moves with a Speed Of $3.0 \times 104 \mathrm {~m} / \mathrm { s }$

question 145

Multiple Choice

An electron moves with a speed of $3.0 \times 104 \mathrm {~m} / \mathrm { s }$ perpendicular to a uniform magnetic field of $0.40$ T. What is the magnitude of the magnetic force on the electron? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

• A) \(4.8 \times 10 ^ { - 14 } \mathrm {~N}\)
• B) \(0 \mathrm {~N}\)
• C) \(2.2 \times 10 - 24 \mathrm {~N}\)
• D) \(5 \times 10 - 20 \mathrm {~N}\)
• E) \(1.9 \times 10 - 15 \mathrm {~N}\)

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Definitions:

Internal Rate

Short for Internal Rate of Return (IRR), it's a financial metric used to estimate the profitability of potential investments, calculated as the rate of return that sets the net present value of all cash flows from the investment equal to zero.

Required Return

The minimum return an investor expects to achieve on an investment, taking into account the risk level and other available opportunities.

Homemade Dividend

A concept where investors create their own dividend stream by selling a portion of their portfolio of equities instead of relying on company-issued dividends.

Dividend Policy

A company's stance on distributing profits back to shareholders in the form of dividends versus reinvesting them in the business.