Two Coils Have a Mutual Inductance of 3

question 27

Multiple Choice

Two coils have a mutual inductance of 3.5 mH.If the current in one coil is changing at a rate of 4.8 A/s, what is the emf induced in the second coil?

• A)7.3 x 10^-4 V
• B)0.017 V
• C)1400 V
• D)cannot tell without knowing the inductance of the second coil
• E)cannot tell without knowing the current in the second coil

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Definitions:

Electroencephalograph

An instrument used to record the electrical activity of the brain, typically through electrodes placed on the scalp.

Deep Sleep

A stage of sleep that involves the slowest brain waves during the sleep cycle, crucial for physical renewal and healing.

Beta Pattern

A pattern of brain wave activity with a frequency range of about 12-30 Hz, associated with wakefulness, alertness, and active concentration.

Delta Pattern

A type of brain wave that is associated with deep sleep and is characterized by low frequency and high amplitude.