Four straight conductors of equal length 0.20m are placed separately in the same uniform magnetic field of 0.50T. Their currents and angles with the field are:
P: 4A, 90∘
Q: 6A, 30∘
R: 5A, 60∘
S: 3A, 90∘
Which conductor experiences the greatest magnetic force?
a) P
b) S
c) R
d) Q