A Circular Wire Loop of Resistance R = 1 $\varOmega$ And Diameter 5

question 20

Multiple Choice

A circular wire loop of resistance R = 1.0 $\varOmega$ and diameter 5.0 cm rotates with period 150 ms about a horizontal axis while in a region having a 0.142 T magnetic field pointing in a horizontal plane at an angle of 35 degrees relative to the rotation axis.At time t = 0 the plane of the loop is horizontal.What is the magnitude of the induced EMF in the loop at a time of t = 75ms?

• A)4.7 mV
• B)0.75 mV
• C)6.7 mV
• D)0
• E)8.2 mV

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Definitions:

Sensory Adaptation

The mechanism where sensory receptors reduce their responsiveness to stimuli that remain constant over time.

Weber's Law

A principle in psychology that states the smallest perceptible difference in a stimulus is proportional to the intensity of the original stimulus.

High Threshold

A term indicating a level of high sensitivity or resistance to stimulus before a response is triggered.

Signal-detection Theory

A method for measuring the capacity to differentiate informative patterns from random, distracting ones.