A wire of length L is bent into an arc of a circle and found to subtend an angle of θ radians at the center. If a current i is passed through it, the magnetic induction at the center of the circle is?
Answer & explanation
Correct answer: option 1
Magnetic field at the center of the circular coil carrying current : \(\frac{\mu_{o}}{4\pi}\) \(\frac{i}{r}\) \(\theta\)
Use: L = r \(\theta\)
r = \(\frac{L}{\theta}\)