Heating element of an electric heater is made up of
-
tungsten
-
graphite
-
chromium
-
nichrome
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.