Answer: The correct answer is 'when the current is at a 90-degree angle to the field'
Step-by-step explanation:
The Force on a current carrying wire in a magnetic field is given by lorents Force:

B= Magnetic Field in Tesla
I = Current in a wire in Ampere
L= Length of the wire in meters
= angle between the Vetor B and vector I in degrees.
(force will be maximum)
(force will be minimum)