An Electron Is Released from Rest at the Negative Plate

question 49

Multiple Choice

An electron is released from rest at the negative plate of a parallel-plate capacitor.If the distance across the plates is 5.0 mm and the potential difference across the plates is 20 V,with what velocity does the electron hit the positive plate? (m_e = 9.1 × 10−³¹ kg,e = 1.6 × 10−¹⁹ C)

• A) 1.3 × 10⁶ m/s
• B) 1.0 × 10⁶ m/s
• C) 2.7 × 10⁶ m/s
• D) 5.3 × 10⁶ m/s

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Definitions:

Income Statement

a financial statement that shows a company's revenues and expenses, and thus its profit or loss, over a specific period of time.

Percentage of Net Change

A calculation that measures the difference in a financial figure over a period as a percent of its value at the start of the period.

Comparative Income Statement

A financial statement that compares income, expenses, and net profits over different periods to show performance trends.

Net Income

The total earnings or profit of a person or company after all expenses and taxes have been subtracted from gross income.