A closely ward solenoid $80\;cm$ long has $5$ layers of winding of 400 turns each.The diameter of the solenoid is $1.8 \;cm$ . If the current carried is $8.0\;A$ , What will be the direction of B B inside the solenoid near its center .

Question

$\begin{array}{1 1} \text{Perpendicular outwards to the plane of paper} \\ \text{Along the axis of the solenoid } \\ \text{parallel along the surface to the right of the plane of the paper } \\ \text{along the surface of the paper to the left side }\end{array}$