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Resistance: Electrical resistance describes how an electrical conductor (a wire) opposes the flow of an electrical current (flow of electrons). To overcome this opposition a voltage (a energy) must dropped (used) across the conductor (wire). Resistance can be described by ohms law: Ohms Law: R = V / I (Resistance = Voltage / Current) (resistance measured in ohms) where: Voltage [V]= the energy lost across an component (voltage measured in volts). Current [I] = the charge (electrons) flowing through an component (current measured in Amps). Electrical resistance can be thought of as sticking your hand out a car window. The faster [current] you drive the harder the wind presses [resistance] against you hand and therefore it takes more energy [voltage] to hold your steady. When trying to overcome electrical resistance, the electrical energy lost is turned into heat. This is how the elements of a household stove, toaster, and fan heater work. Because of the vacuum in a light bulb, the electrical energy lost is instead turned into light. It can be seen the electrical resistance plays a large role in modern life. Resistor: The resistor is the most common electronic component and is used to limit and/or control the voltage and current in an electronic circuit. Resistors are carefully manufactured to provide a predetermined value of electrical resistance which may range from 0.1 ohms to 100,000,000 ohms, depending on the application. The physical size of a resistor also varies dependant on the amount of power passing through the resistor, given by: P = V x I (Power = Voltage x Current) (power measured in watts) There are also many types of resistors including: · Variable Resistor - changes resistance when its shaft is rotated (volume knob on a stereo). · Thermistor - changes resistance when the temperature changes (used in a thermostat). · Light Dependant Resistor (LDR) - changes resistance when the lighting changes (used in children's night-lights). Resistor Example: An LED is a small red light (such as the one on the front of most TVs) and requires 2.0 volts and 0.02 amps to operate correctly. If we connected that LED up directly to a 12 volt battery, the voltage would be too high, and too much current would flow… the LED would blow up. We need to use a resistor to limit the voltage and current. But which value of resistance should the have resistor? Uses ohms law: R = V / I = (12.0 - 2.0) / 0.02 = 500 ohms (Note: the voltage across the resistor is the battery voltage minus the voltage we want across the LED) But which value of power should the resistor be capable of handling? P = V x I = (12.0 - 2.0) / 0.02 = 0.2 Watts hope this helps
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What is the highest ohms possible?
The highest resistance value in ohms can theoretically be infinite, as resistance can continue to increase indefinitely. However, in practical terms, resistors used in electronic circuits typically have values that can go up to several megaohms (millions of ohms) for specialized applications. Some high-value resistors can reach gigaohms (billions of ohms) in specific contexts, such as in high-impedance applications or certain types of sensors. Ultimately, the practical limit is determined by the materials and technology used in creating the resistors.
What are the types of materials used to make clothes?
cottonWoolGabardineChiffonTaffetaCrepeTwillNylonDenim
What could be used as a resistor in a circuit?
A resistor in a circuit can be made from various materials, including carbon, metal film, or wire-wound materials, which resist the flow of electric current. Additionally, non-linear components like diodes can also serve as resistors in specific applications, such as in variable resistors or potentiometers. In some cases, even certain types of semiconductor devices can act as resistive elements. The choice of resistor depends on the desired resistance value, power rating, and stability in the circuit.
How much is a resistor for an electronic circuit?
Resistors are tiny devices on circuit boards. Prices should range but should not be expensive but dependent on the materials used and the nature of conductivity.
What resistors do in oscillator circuit?
The same thing they do in every circuit, resist the flow of electricity. That being said there are Many types of ossilators, and they can use resistors for many purposes.
What are those materials of resistors?
most of the resistors commonly used are carbon resistors
Which materials are used in the manufacturing of standard resistors and heating materials?
Standard resistors are typically made of ceramic or metal film materials such as carbon film or metal oxide. Heating materials can be made from various materials like nichrome (nickel-chromium alloy), Kanthal (iron-chromium-aluminum alloy), or tungsten, which offer high resistance and heat tolerance.
What are resistors and why are importanted?
Resistors are a material that resists the flow of electrons. The resistors are materials that resist electric current energy to be changed into other forms.
What are resistors and what are they important?
Resistors are a material that resists the flow of electrons. The resistors are materials that resist electric current energy to be changed into other forms.
What are the types of resistors its application and uses?
This seems like a question from an electrical course, and is probably best answered by your course materials. It's your test question, not ours, and there won't always be someone to ask for the answer. Earn your diploma.
What is the scientific name for electricity resistors?
Um... "resistors". There are different types, with specific names, generally based on how they're constructed, but they're still called resistors.
What are the different types of materials that can be used for window casing?
The different types of materials that can be used for window casing include wood, vinyl, aluminum, and composite materials.
What is the highest ohms possible?
The highest resistance value in ohms can theoretically be infinite, as resistance can continue to increase indefinitely. However, in practical terms, resistors used in electronic circuits typically have values that can go up to several megaohms (millions of ohms) for specialized applications. Some high-value resistors can reach gigaohms (billions of ohms) in specific contexts, such as in high-impedance applications or certain types of sensors. Ultimately, the practical limit is determined by the materials and technology used in creating the resistors.
What are types of resistors?
well its hell to you gays it is nikky
What is a non-conductive resistor?
non-conductive resistors are resistors made from materials which do not allow the passage or flow of electric current through them.
What are the different types of materials used for constructing a painting stretcher?
The different types of materials used for constructing a painting stretcher include wood, aluminum, and composite materials.
What are the types of resistor?
There are many types of Resistors , which can be classified in many ways. The fundamental classification is based on the Power Handling Rating , which breaks up into Power Resistors & Low power resistors. Power Resistors can handle large Powers & Currents. These are generally made of High Resistance alloys like Nichrome , which are used in heaters , toasters etc. Some types of small power resistors are also used in electronic circuits which handle large currents like in power supplies etc. Infact the incandescent lamp is a special form of power resistor. Low power resistors are usually used in electronic circuitry , which again have different power capacity ratings usually less than 1watt to small surface mounted devices which are rated for few tenths of milliwatts. Another important classification is based on the stability of the resistor material & hence its ohmic values. Such resistors are used for precision applications like measuring circuits , meters etc. Then there are specialised forms of clasification depending on application e.g Positive & Negative Temeprature coefficient resistors ( Thermistors ) are used for temperature sensing , Voltage Dependent resistors are used in protection circuitry, High Voltage resistors are used where requires for high voltage ( kilovolts ) electronic circuitry like X Ray , Laser & Electrostatic Power supplies.
