The Figure Shows a Bar Moving to the Right on Two

question 26

Multiple Choice

The figure shows a bar moving to the right on two conducting rails. To make an induced current i in the direction indicated, a constant magnetic field in region A should be in what direction?

• A) Right
• B) Left
• C) Into the page
• D) Out of the page
• E) Impossible, cannot be done with a constant magnetic field

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Definitions:

Semiconductor Materials

Materials that have electrical conductivity between that of a conductor and an insulator, used in the manufacture of electronic devices, including silicon and germanium.

Piezoelectricity

The production of electricity by applying pressure to a crystal.

Pressure

The force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Strict Constructionists

Individuals who interpret the Constitution in a literal and narrow way, often limiting the powers of the federal government.