Physics · Current Electricity
एक एल्युमीनियम के तार को समान रूप से इस प्रकार खींचा जाता है कि उसकी लंबाई 0.4% बढ़ जाती है। यह मानते हुए कि आयतन नियत रहता है, इसके विद्युत प्रतिरोध में प्रतिशत परिवर्तन है:
- 10.6%
- 20.8%✓
- 30.2%
- 40.4%
सही उत्तर देखें
0.8%
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