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प्रश्न
The electrical resistivity of three materials A, B and C at 20°C is given below:
| Material | Resistivity (Ω m) |
| A | 1017 |
| B | 44 × 10−6 |
| C | 1.62 × 10−8 |
- Classify these materials as conductor, alloy and insulator.
- Give one example of each of these materials and state one use of each material in the design of an electrical appliance say an electric stove or an electric iron.
वर्गीकरण करा
अति संक्षिप्त उत्तर
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उत्तर
i.
| Conductor | Insulator | Alloy |
| C | A | B |
ii.
| Material | Example | Use |
| A | Ceramic | Used in bulb holders |
| B | Nichrome | Making toasters |
| C | Copper | Making power cords |
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