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Practice #13,217
Q
किसी वृताकार कुंडली में धारा प्रवाहित की जाती है यदि कुंडली की त्रिज्या को दोगुना कर दिया जाए तो उसके केंद्र पर चुंबकीय क्षेत्र की तीव्रता का मान होगा ?
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