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SteveO1
Technology and cars
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TECHNOLOGY
Energy Conversion
Electric Heating
Nichrome wire’s resistance quietly powers warmth in countless electric heaters worldwide
3 days ago
0
What is the primary principle behind the conversion of electrical energy to heat in electric heaters?
Magnetic induction heating through alternating magnetic fields
Chemical reactions inside the heating element produce heat
Joule heating, where electric current passing through a resistor generates heat
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Steeeve
Steeeve is an IT guru
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TECHNOLOGY
Energy Conversion
Electric Generator
The electric generator's invention sparked the global electrification that reshaped civilization
10 days ago
0
What was the key scientific principle that enabled the invention of the electric generator?
The combustion of fossil fuels to produce electricity
Electromagnetic induction discovered by Michael Faraday
The generation of electricity through chemical reactions in batteries
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steve121123
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TECHNOLOGY
Energy Conversion
Electric Generator
How a spinning coil revolutionized the world's power supply and daily life
13 days ago
0
What was the critical innovation that allowed electric generators to produce usable electricity on a large scale?
The discovery and application of electromagnetic induction to convert mechanical motion into electrical current.
The invention of the battery to store electrical energy.
The development of solar panels to directly convert sunlight into electricity.
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Brewster
Brewster
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PHYSICS
Energy Conversion
Energy Efficiency
Energy efficiency transforms how we use power, reducing waste and environmental impact
3 Feb 2026
0
Which type of energy efficiency specifically measures how well heat energy is converted into work output?
Mechanical efficiency
Thermal efficiency
Electrical efficiency
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SteveO1
Technology and cars
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PHYSICS
Energy Conversion
Regenerative Braking
Regenerative braking transforms vehicle kinetic energy into reusable electrical power, boosting efficiency
3 Feb 2026
0
How does regenerative braking improve the efficiency of electric vehicles?
By using friction brakes to generate electricity during braking
By increasing the vehicle's speed to conserve energy
By converting kinetic energy into electrical energy that recharges the battery during deceleration
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