Filament lamp
- From the I/V graph, the ratio V/I increases as current increases.
- Resistance of the filament lamp increase with temperature.
Reason: As the potential difference across a filament lamp increases, the current increases and the energy dissipated, as heat, increases, resulting in a higher temperature. As the temperature increases, resistance of the filament increases. The collision between the free electrons and the lattice ions increases due to more rigorous vibration of the lattice ions.
Ello mate, today i wanted to learn why we dont use the gradient to calculate the resistance at a specific point using tangents rather we use the ration R=V/I?? Why?
Ello mate, today i wanted to learn why we dont use the gradient to calculate the resistance at a specific point using tangents rather we use the ration R=V/I?? Whyy?
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An explanation so succinct and so powerful.
Lots to think about, much to ponder.
With love,
F
physics nerds
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