A Wire of Length L and Resistance R Is Now $\times$

question 76

Multiple Choice

A wire of length L and resistance R is now drawn out by pulling such that its new resistance is 15R.What is its new length? (Assume the density remains constant.)

• A)1.50 L
• B)6.67 \(\times\) 10^-1 L
• C)2.25 L
• D)3.87 L
• E)2.58 \(\times\) 10^-1 L

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Definitions:

Expectancy Theory

A motivation theory stating that an individual's motivation is influenced by the belief that effort will lead to performance and performance will lead to desired rewards.

Need-Based Theory

A theory that emphasizes understanding human motivation in terms of specific needs, such as safety, esteem, and self-actualization.

Cognitive Perspective

A psychological approach that focuses on the mental processes involved in knowledge acquisition, perception, memory, and problem-solving.

Goal Theory

A psychological framework suggesting that setting and striving for specific, challenging goals can significantly improve performance.