MHT CET · Physics · Magnetic Effects of Current
The magnetic field intensity ' \(\mathrm{H}\) ' at the centre of a long solenoid having ' \(n\) ' turns per unit length and carrying a current I', when no material is kept in it, is
- A \(\frac{\mathrm{I}}{\mathrm{n}}\)
- B \(\frac{\mathrm{n}}{\mathrm{I}}\)
- C \(\mathrm{nI}\)
- D \(\mathrm{n}^2 \mathrm{I}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{nI}\)
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