The temperature dependence of resistances of \(\mathrm{Cu}\) and undoped \(\mathrm{Si}\) in the temperature range \(300\text-400~\text{K}\), is best described by:

1. Linear increase for \(\mathrm{Cu}\), linear increase for \(\mathrm{Si}\)
2. Linear increase for \(\mathrm{Cu}\), exponential increase for \(\mathrm{Si}\)
3. Linear increase for \(\mathrm{Cu}\), exponential decrease for \(\mathrm{Si}\)
4. Linear decrease for \(\mathrm{Cu}\), linear decrease for \(\mathrm{Si}\)
Subtopic:  Types of Semiconductors |
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What is the current through the zener diode if its breakdown voltage is \(5~\text V?\)
 
1. \(58.33 ~\text{mA}\)
2. \(25 ~\text{mA}\)
3. \(28.33 ~\text{mA}\)
4. \(20.33 ~\text{mA}\)
Subtopic:  Types of Semiconductors |
From NCERT
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