A Group Of $1.0 - \mu \mathrm { F } , 2.0 - \mu \mathrm { F }$

question 21

Multiple Choice

A group of $1.0 - \mu \mathrm { F } , 2.0 - \mu \mathrm { F }$ , and $3.0 - \mu \mathrm { F }$ capacitors is connected in parallel across a $24 - \mathrm { V }$ potential difference (a battery) . How much energy is stored in this three-capacitor combination when the capacitors are fully charged?

• A) \(2.1 \mathrm {~mJ}\)
• B) \(1.7 \mathrm {~mJ}\)
• C) \(4.8 \mathrm {~mJ}\)
• D) \(7.1 \mathrm {~mJ}\)

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Definitions:

Achievement Test

A type of ability test that measures what one has learned. Types of achievement tests include survey battery tests, diagnostic tests, and readiness tests.

Percentiles

A measure that indicates the value below which a given percentage of observations in a group of observations falls.

Stanines

Derived from the term “standard nines,” this is a standardized score frequently used in schools. Often used with achievement tests, stanines have a mean of 5 and a standard deviation of 2, and range from 1 to 9.

T-scores

Standardized scores with a mean of 50 and a standard deviation of 10, used to compare an individual's score against a normative sample.