Multiple choice

The element of electric heater is made of

  1. titanium

  2. iron

  3. nichrome

  4. tungsten

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

Nichrome is used because it has high electrical resistance and does not oxidize or corrode easily at high temperatures. Tungsten is used in incandescent bulbs, while iron would oxidize rapidly at heating element temperatures.