As Shown in the Figure, a Straight Wire Carries a Steady

question 27

Multiple Choice

As shown in the figure, a straight wire carries a steady current I. A metal bar is in contact with a pair of rails and is in upward motion with velocity of magnitude ν. The polarity of the induced emf in terminals X and Y is

• 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:

Open Market

A marketplace that is open to all participants and where goods, securities, currencies, and other items can be bought and sold.

Simple Money Multiplier

A formula used to determine the maximum amount of money that can be created by a bank's deposits under a fractional reserve banking system.

Required Reserve Ratio

The fraction of deposits that banks are legally mandated to keep as reserves and not lend out.

Excess Reserves

The reserves held by financial institutions in excess of the minimum reserve requirements set by central banks; these are not used for lending and can influence the money supply.