In the Figure, a Copper Bar Is in Contact with a Pair

question 52

Multiple Choice

In the figure, a copper bar is in contact with a pair of parallel metal rails and is in motion with velocity ν. A uniform magnetic field is present pointing downward, as shown. The bar, the rails, and the resistor R are all in the same plane. The induced current through the resistor R is

• A) from a to b.
• B) from b to a.
• C) There is no induced current through the resistor.

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Definitions:

Independent Events

Two or more events where the occurrence or outcome of one event does not affect the occurrence or outcome of another.

Intersection of Events

The set containing all the outcomes that are common to two or more events in probability and statistics.

Union of Events

The set of outcomes that belong to either one event or another in probability, including those that belong to both events.

Sample Space

The set of all possible outcomes in a statistical experiment.