A 20 Turn Coil of Area 10 Cm² Is Placed

question 39

Multiple Choice

A 20 turn coil of area 10 cm² is placed in a magnetic field so that the normal to its area is in the direction of the field.If the field originally has a value of 0.25 T that increases to 0.35 T in 2.0 s,what is the average emf induced in the coil?

• A) 7.0 mV
• B) 2.0 mV
• C) 1.0 mV
• D) 3.5 mV
• E) 4.0 mV

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Definitions:

Mental Age

A measure of an individual's cognitive ability compared to the average cognitive ability of an individual at a specific chronological age.

Stanford-Binet Intelligence Scale

A standardized test that assesses intelligence and cognitive abilities in children and adults, used widely in educational and clinical settings.

Mental Age

A measure of an individual's mental ability expressed as the age at which an average individual reaches the same level of performance.

Charles Spearman

A psychologist known for his pioneering work in statistics and intelligence, specifically for his development of factor analysis and the concept of a general intelligence factor, "g".