A resistor and a heating element are indeed the same thing, just designed for different jobs. In a resistor, heat is generated as an undesired (but unavoidable) side effect, whereas in a heating element, the heat is exactly what it's supposed to do. In fact, resistors can be used as heating elements!1 may 2018
What type of load is a electric heater?
Resistive Load Two common examples of resistive loads are incandescent lamps and electric heaters. Resistive loads consume electrical power in such a manner that the current wave remains in phase with the voltage wave. That means, power factor for a resistive load is unity.
Is an immersion heater a resistive load?
Heater coil is made of Nichrome wire (NiCr) which has high resistance (100 times that of copper wire. Hence heater is considered resistive load.
What are the properties of heating element?
The most important heating element characteristics are sufficient resistivity, high oxidation resistance, low-temperature coefficient of resistance, high toughness, and high melting point.
What is the resistance of a heating element?
Since we know that the hot water electrical circuit feeds 220 VAC to the 16 ampere heating element the resistance of that element is equal to 13.75 ohms. We can round that number up to 14 ohms.
Which of the following is the desirable property of resistance heating element materials?
Properties of good Heating Element: High melting point. Free from oxidation in an open atmosphere. High tensile strength. Sufficient ductility to draw the metal or alloy in the form of wire.
Why does the heating element need to have resistance?
The resistance is what makes them get hot. The resistance is matched to the voltage so that the voltage is used up getting through the wire. That is why you never shorten a heating element wire.
Do heaters have high resistance?
Heating elements don't have a high resistance: for example a 1kW 220v heating element will have a resistance around 50 Ohms and a 2kW one will be about 25Ohms. If you're in a country using 110V then a 2kW element will have a resistance of only 6.05 Ohms.