A Conducting Bar Moves to the Left at a Constant

question 42

Multiple Choice

A conducting bar moves to the left at a constant speed v on two conducting rails joined at the left as shown.As a result of the bar moving through a constant magnetic field, a current I is induced in the indicated direction.Which one of the following directions is that of the magnetic field?

• A)toward the right
• B)toward the left
• C)parallel to the long axis of the bar
• D)into the page
• E)out of the page

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Definitions:

Probability

A measure of the likelihood of a particular event or outcome occurring, expressed as a number between 0 and 1.

Expected Utility Maximizer

An individual who makes choices under uncertainty to maximize their expected level of satisfaction, based on the probabilities of different outcomes.

Von Neuman-Morgenstern

A theory in economics that provides an axiomatic basis for expected utility theory, which helps to explain choice under uncertainty.

Probability

An indication of how probable an event is to happen, represented numerically between 0 and 1, with 0 meaning it cannot happen and 1 meaning it is certain to happen.