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In a toaster, the house current from the outlet passes through a wire with some resistance. Household electricity is supplied at a nominal 117 volts AC. If 'R' is the resistance of the wire in the toaster, then the power (heat) dissipated by the wire is E2/R = (117)2/R watts of heat. Notice that as long as the voltage remains constant, MORE resistive heat is dissipated from a SMALLER resistance.
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Two examples of resistive heating?
An incandescent light bulb. An electric heater. A simple resistor. Basically most things that heat up when a current is passed through them do so due to the resistive nature of the load.
Does the wire in the electrical cord of an electric kettle have a higher or lower resistance than the heating element inside the kettle?
The wire in the cord has much lower resistance than the heating element. The heating element is a resistive or resistance heating element. Resistance in the quality of a substance or material that causes it to limit current flow, and it get heated up in the process. The heating element has all but the smallest fraction of the resistance in the circuit, so the heat, that thermal energy that get the water hot, is generated by the resistance of the heating element.
What are examples conduction convection and radiation?
example of conduction is heating a metal rod. the heat transmits without the movement of particles. convection is heating water. example of radiation is the heat received by sun. in this case, heat travels through vacuum WITHOUT heating the space between the sun and the Earth.
What is called the force between the tire and the road?
resistive force (friction)
What energies come out of a kettle?
When a kettle is in use, the primary forms of energy involved are electrical energy and thermal energy. Here's how these energies are involved in the process: Electrical Energy: The kettle is connected to an electrical power source, and electrical energy is supplied to the heating element inside the kettle. The heating element is usually made of a resistive material, such as nichrome, which resists the flow of electricity, leading to the generation of heat. Thermal Energy: The electrical energy is transformed into thermal energy as the resistive heating element heats up. This thermal energy is transferred to the water inside the kettle, raising its temperature and causing it to boil. Heat Energy: The thermal energy generated in the heating element is transferred to the water, converting it from a liquid state to a gaseous state (steam) during the boiling process. Kinetic Energy: As steam is generated, it expands and exerts pressure, leading to the movement of steam molecules. This movement represents kinetic energy. Sound Energy: The boiling water and the release of steam can also produce sound energy. The bubbling and hissing sounds are examples of sound energy associated with the operation of a kettle. While electrical and thermal energies are the primary forms involved, the process of boiling water in a kettle can manifest in various forms of energy depending on the specific conditions and the environment
Is ac better than dc for resistive heating?
no, heating is identical
What is an example of resistive load?
Some examples of resistive loads are: heaters, incandescent lights, fans etc.
Two examples of resistive heating?
An incandescent light bulb. An electric heater. A simple resistor. Basically most things that heat up when a current is passed through them do so due to the resistive nature of the load.
Where does lost energy in a rheostat go?
It is lost in heating the resistive material of the rheostat.
What is the role of resistors in household appliances?
Probably the most common resistor in a household appliance is the resistive heating element. They appear in an electrical stove or range. The standard electric range and its oven have resistive heating elements in them. They're just "oversized" resistors that get really hot when we run current through them. Toasters have resistive heating elements, too. Most of the use nichrome in the form of wire or in little flat strips. Some have quartz heating elements, which have that resistive heating element inside quartz or fused silica glass. Coffee makers have resistive heating elements. Toaster ovens, too. Hair dryers and straightners? Yup. Anything that plugs in and is designed to get hot probably has a resistive heating element in it. There are actual resistors, like the electronic components, in all the electronic equipment in the house. All of it. They may be discreet components, or may be part of an integrated circuit. But they're there.
What type of load is elecric stove?
resistive load. I assume that the stove you are reffering is with heating coils.
What is another name for a cooker heating element?
Aga ? will this do? Edit: No idea what Aga is. Resistive element. Heating element. Heater. Burner. Do you care to specify the appliance?
What is rear window defogger?
This is normally a resistive heating fixed to the inner surface of the glass of the rear screen.
What is the welding process uses a resistive heating system to achieve weld metal deposition?
Manual Metal Arc Welding
How do elements work?
Heating elements are tightly wound coils of resistive wire mounted inside of an electric furnace cabinet
How does electricity create heat in stoves and machinerys?
Effectively by friction. Resistive electrical heating is caused by the moving electrons of the current "hitting" atoms and making them vibrate.
What is AC23?
Alternating Current for highly inductive load i.e. motors...whereas AC21 is for resistive load....i.e. heating elements. this is what you called utilization category...
