A Bar Magnet Is Held Vertically with Its Upper End

question 26

Multiple Choice

A bar magnet is held vertically with its upper end a little bit below the center of a horizontal metal ring.The upper end of the magnet is its north pole,as shown in the figure.The bar magnet is now dropped.An observer views the ring from above its center.To this observer,how will the induced current in the ring behave as the magnet falls?

• A) The current will flow clockwise and be increasing.
• B) The current will flow clockwise and be decreasing.
• C) The current will flow counter-clockwise and be increasing.
• D) The current will flow counter-clockwise and be decreasing.
• E) The induced current will be zero.

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Definitions:

Contribution Margin Ratio

The contribution margin ratio is a financial metric indicating the proportion of sales revenue that exceeds variable costs, expressed as a percentage.

Monthly Fixed Expenses

Regular expenses that do not vary in amount and are paid on a monthly basis.

Contribution Margin Ratio

The proportion of sales revenue that exceeds variable costs, typically expressed as a percentage, indicating how much contributes to covering fixed costs and generating profits.

Fixed Expenses

Costs that do not vary with the level of production or sales over a short period, such as rent, salaries, and insurance.