The Hall Effect Can Be Used to Calculate the Charge-Carrier

question 44

Multiple Choice

The Hall effect can be used to calculate the charge-carrier number density in a conductor.If a conductor carrying a current of 2.0 A is 0.5 mm thick, and the Hall effect voltage is 4.5 µV when it is in a uniform magnetic field of 1.2 T, what is the density of charge carriers in the conductor?

• A)1.0 x 10²⁸/m³
• B)6.7 x 10²⁷/m³
• C)4.6 x 10²⁷/m³
• D)1.7 x 10²⁷/m³
• E)1.2 x 10²⁷/m³

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Definitions:

Neurotransmitter Release

The process by which neurotransmitters are released from nerve endings or synapses into the synaptic cleft to transmit signals between neurons.

Dishabituation

The revival of a response that has been habituated, typically due to a novel stimulus interrupting the repetition.

Sensitization

An increased reaction to a stimulus following repeated exposure, typically in response to something negative or harmful.

Withdrawal Response

A behavior in which an organism avoids or retreats from an unpleasant or threatening stimulus.