Two Uniform Rods, Each of Length 2

question 3

Multiple Choice

Two uniform rods, each of length 2.0 m, are bent to form semicircles. One rod has a charger per unit lent of 1.5 nC/m, and the other has a charge per unit length of -1.5 nC/m. The semicircles are joined to make a circle. What is the magnitude of the electric field at the center of the circle?

• A) 42 N/C
• B) 84 N/C
• C) 34 N/C
• D) 68 N/C
• E) 0

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Definitions:

Standard Deviation

A measure of the dispersion or variability of a set of data points or investment returns, indicating the degree of risk or volatility.

Risk-Free Asset

An investment with a guaranteed return and no risk of financial loss, typically represented by government bonds.

Capital Allocation Line

A line that graphically represents the risk-versus-return profile of risky assets, and indicates the optimal portfolio of risky and risk-free assets.

Risk-Free Asset

An investment with a guaranteed return and no risk of financial loss, often represented by government bonds.