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A light bulb is not an ohmic resistor because its resistance changes with temperature. As the filament heats up when current passes through it, its resistance increases, violating Ohm's law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points. In contrast, ohmic resistors maintain a constant resistance regardless of temperature or current. Thus, the relationship between voltage and current in a light bulb is nonlinear.
What else can I help you with?
What is the difference between an ohmic resistor and a non-ohmic resistor?
A non-ohmic resistor doesn't have a constant resistance. A ohmic resistor has a constant resistance.
What happens to the resistance of a common ohmic resistor when it is heated?
When a common ohmic resistor is heated, its resistance typically increases.
What is the resistor inside a light bulb called?
the wire in your light bulb is a resistor :)
Is a ceramic resistor ohmic?
yes
Is a light dependent resistor ohmic?
In some circumstances a filament bulb is used as a variable resistor. As the filament heats up, its resistance increases. This effect is used in some automatic gain control circuits; as the signal level increases, the changing resistance of the bulb can modify the feedback level in order to hold the level constant.
What is the resistor in an incandescent light bulb called?
It is the filament.
What is an example of an ohmic resistor?
i give the ans why iam asking you
Is LDR an ohmic conductor?
A Light Dependent Resistor (LDR) is not considered an ohmic conductor. Ohmic conductors follow Ohm's Law, where the current through the material is directly proportional to the voltage across it, resulting in a constant resistance. In contrast, the resistance of an LDR changes with varying light intensity, leading to a non-linear relationship between voltage and current. Thus, its behavior does not conform to ohmic characteristics.
Is a light bulb a conductor?
No, a light bulb is not a conductor. A light bulb is made of materials that act as insulators, such as glass and tungsten. The filament inside the light bulb serves as a resistor to generate light when electricity passes through it.
Is it true a light bulb acts as resistor in the flow of electrons?
While a light bulb does not technically act as a resistor, in practice it does impede the flow of electrons due to its resistance. As electrons pass through the filament of the light bulb, they encounter resistance, which causes them to release energy in the form of heat and light. This phenomenon is what allows the light bulb to produce light.
Do a light bulb acts as a resistor in the flow of electrons?
No, a light bulb does not act as a resistor in the flow of electrons. A light bulb converts electrical energy into light and heat through the resistance of its filament. Resistors are passive components specifically designed to control the flow of electric current in a circuit.
What is the function of a resistor in a light bulb?
Most light bulbs don't have resistors; they are resistors. The filament introduces resistance as part of its action. The resistance is what makes it glow. Usually, if you use a resistor with a light bulb or other lighting device (neon tube, LED, etc), it is external. Its purpose is to reduce the voltage to match the requirements of the bulb. For instance, with a 50 ohm resistor, you could probably use a flashlight bulb with a 9 volt battery.
