1. Silicon is widely used in electronics because of its:
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Explanation:
Silicon is widely used in the electronics industry due to its ideal semiconductor properties, allowing it to effectively conduct electricity under certain conditions.
2. The material commonly used for making LEDs is:
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Explanation:
Gallium arsenide and other compound semiconductors are commonly used for manufacturing LEDs due to their direct bandgap, which is efficient for light emission.
3. Capacitors are electronic components used to:
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Explanation:
Capacitors are electronic components that store electrical energy in an electric field and are commonly used in various electronic circuits for this purpose.
4. The core component of a resistor is made from materials with:
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Explanation:
Resistors are made from materials with high resistivity to limit or regulate the flow of electric current in a circuit.
5. A material's ability to be drawn into wires is known as:
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Explanation:
Ductility is a material's ability to deform under tensile stress, often characterized by the material's ability to be stretched into a wire.
6. A type of passive electronic component that stores energy in a magnetic field is:
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Explanation:
Inductors are passive electronic components that store energy in a magnetic field when electric current flows through them.
7. The property of materials to become magnetized under an external magnetic field is called:
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Explanation:
Permeability is a property of materials that indicates their ability to become magnetized in the presence of an external magnetic field.
8. Piezoelectric materials generate electric charge when they are:
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Explanation:
Piezoelectric materials generate an electric charge in response to applied mechanical stress, a property that is utilized in various sensors and actuators.
9. The electrical property of a material that opposes the flow of current is called:
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Explanation:
Resistance is the property of a material that opposes the flow of electric current, causing electrical energy to be converted into heat.
10. Ferrite is a material commonly used to make:
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Explanation:
Ferrite is a ceramic compound composed of iron oxides mixed with metallic elements, commonly used in the cores of inductors due to its high magnetic permeability.
11. Optical fibers primarily use which material for signal transmission?
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Explanation:
Optical fibers are made from glass or plastic and are used for transmitting light signals over long distances with minimal loss.
12. The type of battery that is rechargeable and uses lithium ions as the charge carriers is a:
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Explanation:
Lithium-ion batteries are rechargeable batteries that use lithium ions as the primary component in their electrolyte.
13. A thermistor is a type of resistor whose resistance:
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Explanation:
A thermistor is a type of resistor whose resistance significantly decreases as temperature increases. They are widely used as temperature sensors.
14. The main advantage of using gallium nitride (GaN) in semiconductors is:
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Explanation:
Gallium nitride (GaN) offers a high breakdown voltage, making it advantageous for high-power and high-frequency applications.
15. Superconductors are materials that:
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Explanation:
Superconductors are materials that exhibit zero electrical resistance below a characteristic critical temperature.
16. The primary material used in solar cells for converting light to electricity is:
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Explanation:
Silicon is the most widely used material in solar cells due to its semiconductor properties, which enable it to efficiently convert sunlight into electricity.
17. The most common type of capacitor found in electronic circuits is the:
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Explanation:
Ceramic capacitors are widely used in electronic circuits due to their small size, reliability, and low cost.
18. A varistor is an electronic component that:
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Explanation:
A varistor is a type of resistor whose resistance changes based on the voltage applied. It is commonly used for protecting circuits against excessive transient voltages.
19. An alloy commonly used in thermocouple wires is:
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Explanation:
Constantan, an alloy of copper and nickel, is commonly used in thermocouple wires due to its stable resistance-temperature relationship and good thermoelectric properties.
20. In electronics, a diode is typically used to:
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Explanation:
A diode is a semiconductor device that primarily allows current to flow in one direction, demonstrating rectifying properties.