When a Microwave Filter Consisting of Vertical Parallel Metal Rods

question 66

Multiple Choice

When a microwave filter consisting of vertical parallel metal rods is in the absorbing position, oscillating currents are set up in the rods. At any one instant, the current in each rod has the same magnitude and direction. At that instant

• A) the rods will try to move apart horizontally.
• B) the rods will try to move together horizontally.
• C) the rods will try to shift vertically upwards.
• D) the rods will try to shift vertically downwards.
• E) the rods will not be affected because the source of current is not a battery.

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Definitions:

Resistance

The opposition to the flow of electric current, measured in ohms, affecting how much current flows through a circuit.

Inductor

An inductor is a passive electronic component that stores energy in a magnetic field when electric current flows through it, used in various filtering, tuning, and energy storage applications.

Lenz's Law

A principle in electromagnetism stating that induced currents will flow in a direction that opposes the change causing them.

Polarity

The characteristic of having two opposed attributes or poles, commonly used in reference to the direction of electrical current or magnetism.