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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Cups of water for coffee or tea can be warmed with a coil that is immersed in the water and raised to a high temperature by means of electricity. (a) Why do the instructions warn users not to operate the coils in the absence of water? (b) Can the immersion coil be used to warm up a cup of stew?

(a)

To determine
Why do the instructions warn users not to operate the coils in the absence of water.

Explanation

Water can be warmed using the coil immersed in water. The coil contains metal that gets hot due to resistance and the water gets heated. Joule heating effect explains this process.

In the absence of water when the coil is operated without water, the coil gets hot and the metal shell covering is lost from the coil...

(b)

To determine
Can the immersion coil be used to warm up a cup of stew.

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