Multiple choice

Heating element of an electric heater is made up of

  1. tungsten

  2. graphite

  3. chromium

  4. nichrome

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

Nichrome (nickel-chromium alloy) is the standard material for heating elements because it has high electrical resistance and a very high melting point (~1400°C), allowing it to get hot without melting. Tungsten is used in light bulb filaments, while graphite and chromium are not suitable for heating elements.