Multiple choice

The heating element is made of ______.

  1. iron

  2. silver

  3. zinc

  4. chromium

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chromium is the key component in heating element alloys like nichrome (nickel-chromium). Pure chromium isn't used alone, but among these options, it's the only element relevant to resistance heating alloys.