A circular coil carrying a certain current produces a magnetic field B 0 at its centre…
Physics · JEE Main · NTA Exams — Magnetic Effects of Current and Magnetism
A circular coil carrying a certain current produces a magnetic field B0 at its centre. The coil is now rewound so as to have 3 turns and the same current is passed through it. The new magnetic field at the centre is
- \(\frac{B_{i}}{9}\)
- 9 B0
- \(\frac{B_{i}}{3}\)
- 3 B0
Answer
(B) 9 B 0
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