Four Point Charges of Equal Magnitudes but with Varying Signs

question 71

Multiple Choice

Four point charges of equal magnitudes but with varying signs are arranged on three of the corners and at the center of the square of side d as shown in the figure. Which one of the arrows shown represents the net force acting on the center charge?

• A) A
• B) B
• C) C
• D) D

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Definitions:

Cash Ratio

A liquidity ratio that measures a company's ability to pay off short-term liabilities with cash and cash equivalents alone, without selling or liquidating other assets.

Cash Equivalents

Short-term, highly liquid investments that are readily convertible to known amounts of cash and have original maturities of three months or less.

Current Liabilities

Short-term financial obligations that are due within one year or within the normal operating cycle of the business, whichever is longer.

Debt-Equity Ratio

This ratio, a test of financial leverage, divides a company's liabilities by its stockholders' equity.