A Type of Transmission Line for Electromagnetic Waves Consists of Two

question 50

Multiple Choice

A type of transmission line for electromagnetic waves consists of two parallel conducting plates (assumed infinite in width) separated by a distance a. Each plate carries the same uniform surface current density of 16.0 A/m, but the currents run in opposite directions. What is the magnitude of the magnetic field between the plates at a point 1.00 mm from one of the plates if a = 0.800 cm? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A) 3.20 × 10^-3 T
• B) 1.00 × 10^-5 T
• C) 4.63 × 10^-5 T
• D) 2.01 × 10^-5 T
• E) 7.07 × 10^-4 T

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Definitions:

Main Effect

The direct impact of an independent variable on a dependent variable in an experimental study, ignoring the effects of other independent variables.

Factor A

In experimental design, a variable that is deliberately manipulated to observe its effect on a dependent variable, often referred to as an independent variable.

Critical Value

The threshold value that a test statistic must exceed in order to reject the null hypothesis in a statistical test.

Df

Short for degrees of freedom, it refers to the number of independent values in a calculation that are free to vary.