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प्रश्न
If copper wire is stretched to make its radius decrease by 0.1%, then the percentage change in its resistance is approximately ______.
पर्याय
−0.4%
+0.8%
+0.4%
+0.2%
MCQ
रिकाम्या जागा भरा
उत्तर
If copper wire is stretched to make its radius decrease by 0.1%, then the percentage change in its resistance is approximately +0.4%.
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