![1176_figure.jpg](https://secure.expertsmind.com/CMSImages/1176_figure.jpg)
FIG. Electric field due to a ring of charge and a point of charge
(a) What is the magnetic field direction at at the center of the circular are (point P), due to
1. Segment 1
2. Segment 2
3. Segment 3
of the wire shown in Figure 5. Give a brief justification, using vector sketches to support your answer, in each case
(b) Obtain an expression, in terms of R, θ, 1, for the munetic field β it at the center of the circular are (point P) in Figure 5. Write your answer in unit vector notation.
(e) Foe θ = 2Π the are of wire would be a current loop. Does your expression above give the right expression for a current loop?
(d) For current of 1.0 A angle θ = 60° and R = 10 cm, obtain the magnetic field in unit vetor notation