The material of the heating element for a furnace should have___________?
Correct answer: C. high specific resistance
- A. lower melting point
- B. higher temperature coefficient
- C. high specific resistance
- D. all of the above
Explanation
A furnace element should have high specific resistance so it produces substantial heat with a practical length and current. It should also have a high melting point, so “lower melting point” and “all of the above” are unsuitable.
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