A Rod of Length L and Electrical Resistance R Moves

question 51

Multiple Choice

A rod of length L and electrical resistance R moves through a constant uniform magnetic field ; both the magnetic field and the direction of motion are parallel to the rod.The force that must be applied by a person to keep the rod moving with constant velocity is:

• A)0
• B)BLv
• C)BLv/R
• D)B²L²v/R
• E)B²L²v²/R

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Definitions:

Efficiency Of Investment

The degree to which invested resources are used optimally to achieve desired outcomes without waste.

Beneficiary

An individual or entity entitled to receive benefits or profits from a will, trust, insurance policy, or other arrangements designed to distribute assets.

Economic Profit

The profit a company makes after deducting both its explicit (direct) and implicit (indirect) costs.

Allocation Of Resources

The process by which resources are distributed for the production of goods and services, usually determined by market forces in a free market, or by government decisions in a planned economy.