In the following arrangement as shown in figure, the magnetic field at point O is given by
(a) B = μ0i/4πa(sinθ1+sinθ2)
(b) B = μ0i/4πa(sinϕ1 +sinϕ2)
(c) Both of (a) and (b)
(d) Noe of the above
Correct Option (b) B = μ0i/4πa(sinϕ1 +sinϕ2)
Explanation :
From ten given figure, magnetic field at point O is given by