The Current in an Alternating Circuit Varies in Intensity with Time

question 116

Multiple Choice

The current in an alternating circuit varies in intensity with time. If I represents the intensity of the current and t represents time, then the relationship between I and t is given by I = 20cos 160 πt where I is measured in amperes and t is measured in seconds. Find the maximum value of I and the time it takes for I to go through one complete cycle. ​

• A)The maximum value of I is 40 amperes; one complete cycle takes seconds.
• B)The maximum value of I is 5 amperes; one complete cycle takes seconds.
• C)The maximum value of I is 20 amperes; one complete cycle takes seconds.
• D)The maximum value of I is 40 amperes; one complete cycle takes seconds.
• E)The maximum value of I is 20 amperes; one complete cycle takes seconds.

---

Definitions:

Sexual Instincts

The innate or biologically driven forces that motivate individuals to seek out sexual activities or behaviors.

Freud's Stages

Refers to Sigmund Freud's theory of psychosexual development, which divides child development into five stages that focus on different sources of pleasure and conflict.

Development

The process of change and growth in humans or organisms over time, encompassing physical, cognitive, and psychosocial aspects.

Defense Mechanism

Psychological strategies employed unconsciously to protect an individual from anxiety arising from unacceptable thoughts or feelings.