A Coil of Wire 20 Cm Length and 200 Turns

Multiple Choice

A coil of wire 20 cm length and 200 turns carries a current of 10 A.A bar of titanium (magnetic susceptibility 1.81 x 10^-4) is positioned within the coil.The magnetic field inside the titanium bar is

A) 7.590 x 10^-4 T.
B) 4.145 x 10^-4 T.
C) 12.6 x 10^-4 T.
D) 1.257 x 10^-2 T.