Question

A wire loop PQRSP formed by joining two semicircular wires of radii R₁, and R₂ carries a current I as shown in figure below. The magnitude of magnetic induction at centre C is

• A. \((\frac{μ_)}{4})I[\frac{1}{R_2}-\frac{1}{R_1}]\)
• B. \((\frac{μ_)}{4})I[\frac{1}{R_1}-\frac{1}{R_2}]\)
• C. \(μ_0I[\frac{1}{R_2}-\frac{1}{R_1}]\)
• D. \(μ_0I(\frac{1}{R_1})\)

Answer 1

The Correct Option is B

The correct option is (B) : \((\frac{μ_)}{4})I[\frac{1}{R_1}-\frac{1}{R_2}]\)