Mathematics · Magnetic Effects of Electric Current
यदि किसी लंबे सीधे धारावाही चालक से r दूरी पर चुंबकीय क्षेत्र B है, तो समान धारा प्रवाहित होने पर उसी चालक से 4r दूरी पर चुंबकीय क्षेत्र का परिमाण क्या होगा?
- 12B
- 2B2
- 34B
- 4B4✓
सही उत्तर देखें
B4
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