As Shown in the Figure, a Metal Bar Is in Contact

question 36

Multiple Choice

As shown in the figure, a metal bar is in contact with a pair of parallel rails. A steady, uniform, magnetic field B is present directed to the right. The bar is moving upward with velocity of magnitude ν. What is the polarity of the induced emf in terminals X and Y?

• A)X and Y are at the same potential.
• B)X is positive and Y is negative.
• C)Y is positive and X is negative.

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Definitions:

Neural Center

A central point in the nervous system consisting of neuron clusters that coordinate specific functions.

Explicit Memories

Information and incidents that can be purposely brought to mind.

Hippocampus

A major component of the brain in humans and other vertebrates, playing critical roles in the consolidation of information from short-term to long-term memory and in spatial memory that enables navigation.

Head Injuries

Physical trauma to the head, which can affect the scalp, skull, brain, or underlying tissues, and can range from mild to severe.