FIGURE 19-9 -Three Equal Point Charges Are Placed at Three of the Three

question 11

Multiple Choice

FIGURE 19-9
-Three equal point charges are placed at three of the corners of a square of side d as shown in Figure 19-9. Which of the arrows shown represents the direction of the net electric field at the center of the square?

• A) A
• B) B
• C) C
• D) D
• E) none of the above

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Definitions:

Internal Rate of Return

A financial metric used to evaluate the profitability of potential investments, calculating the discount rate that makes the net present value of all cash flows equal to zero.

Payback Period

Payback period is the duration required to recover the cost of an investment, calculated by dividing the initial investment by the annual cash inflow.

Net Present Value

A financial metric used to evaluate the profitability of an investment, calculated by subtracting the present value of cash outflows from the present value of cash inflows over a period of time.

Salvage Value

The determined residual amount of an asset at the cessation of its utility.