If an Electric Field Is Applied to a Metal

question 12

Multiple Choice

If an electric field is applied to a metal

• A) very few electrons are excited into the conduction band.
• B) electrons having energies near the Fermi energy require only a small amount of additional energy from the applied field to reach nearby empty energy states.
• C) electrons having energies near the bottom of the band require only a small amount of additional energy from the applied field to reach nearby empty energy states.
• D) the principal mode of conduction is through the motion of holes in the filled part of the band.
• E) the Fermi energy E_f becomes equal to the applied electric field E.

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Definitions:

Rules Of Exponents

Rules of exponents refer to the set of guidelines for performing operations involving powers, including multiplying and dividing powers and taking powers of powers.

Positive Exponents

Refers to exponents that are greater than zero, used to denote the number of times a base is multiplied by itself.

Expression

An expression in mathematics is a combination of symbols that can represent a number, variable, operation, or a combination thereof, without an equality sign.

X

Often used to represent an unknown variable in algebraic equations or the horizontal axis in Cartesian coordinate systems.