Question

A pizza shaped wire carries a current of 5A as shown below. If the angle subtended is $\frac{\pi }{3}$ radians and its radius is 10 cm, what will be the strength of magnetic field due to it at its centre? (Magnetic field due to straight wire at any point passing through it will be zero)

• A. $\frac{{\mu }_{0}i}{6R}$
• B. $\frac{{\mu }_{0}i}{12R}$
• C. $\frac{{\mu }_{0}i}{3R}$
• D. $\frac{{\mu }_{0}i}{18R}$

Answer 1

The correct option is B $\frac{{\mu }_{0}i}{12R}$

Solution is in the next video clip.