A long solenoid has 800 turns uniformly wound over a length of 0.40 m and carries a current of 2.5 A. A straight conductor of length 0.15 m carrying 3 A is placed inside the solenoid perpendicular to its axis so that it experiences the maximum possible force. Calculate the magnitude of this force.
a) 7.5×10−3N
b) 2.4×10−3N
c) 2.8×10−3N
d) 1.1×10−3N