A Heating Element Made of Nichrome Wire (Temperature Coefficient of Resistivity

question 85

Multiple Choice

A heating element made of nichrome wire (temperature coefficient of resistivity, $\alpha$ = 0.400 $\times$ 10^-3 K^-1) is connected to a source.When it has just been turned on and its temperature is 20ºC,it dissipates 960 W of power.What power is dissipated when its temperature has risen to 300ºC?

• A)1.1 \(\times\) 10³ W
• B)9.6 \(\times\) 10² W
• C)8.6 \(\times\) 10² W
• D)8.6 \(\times\) 10³ W
• E)1.1 \(\times\) 10² W

---

Definitions:

Operant Conditioning

A method of learning that occurs through rewards and punishments for behavior, emphasizing the influence of consequences on behavior.

Shaping

A method of operant conditioning by which successive approximations toward a desired behavior are reinforced.

Conditioned Stimulus

A stimulus that initially has no inherent value but acquires significance and the ability to elicit a response through its association with an unconditioned stimulus.

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers an unconditioned response without prior learning.