Answer: The force will be maximum when the current is moving at an angle of 90°
Step-by-step explanation:
The relationship between the force on a current carrying wire and magnetic field is given by the formula:

where,
I = current flowing through wire
B = magnetic field
L = length of the wire
F = force on a current-carrying wire
The value of
is maximum for 90°, which is 1.
Hence, the force will be maximum when the current is moving at an angle of 90°