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← Electric Current and Its Effects
GK QUESTION#2975

Statement I: Nichrome has a higher resistivity than silver, chromium, and iron. Statement II: Materials with high resistivity are commonly used as heating elements in electrical appliances. Which of the following is correct?

  1. AOnly Statement I is correct
  2. BOnly Statement II is correct
  3. CBoth Statement I and Statement II are correctCorrect answer
  4. DBoth Statement I and Statement II are incorrect
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Answer

C. Both Statement I and Statement II are correct

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Explanation

The tabulated resistivity of nichrome is much greater than that of silver, chromium or iron. A useful high resistivity and the ability to withstand operating temperature make such alloys suitable for heating elements. The statement does not mean that increasing resistance raises power at a fixed voltage.

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