The correct answer is that nichrome wires are used as heating elements due to their high specific resistance and the fact that they do not form oxide when red hot. These properties make nichrome effective at converting electrical energy into ...
Category: Class 10 Science
NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
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Approximately 30-40% of the energy consumed by a tube light is converted into visible light. The rest of the energy is lost as heat due to the inefficiencies in the lighting process.
When the length of a wire is doubled from L to 2L, the resistance of the wire will change due to the relationship between resistance and length in electrical conductors.
If the radius of a wire is halved, its resistance will increase. The resistance of a wire is inversely proportional to the cross-sectional area, which is proportional to the square of the radius. Therefore, halving the radius increases the resistance ...
When the temperature of a conductor material is increased, its electrical resistance increases while its electrical conductivity decreases. This is because the increased thermal energy causes more frequent collisions between the charge carriers and the atoms in the material, impeding ...