Fusing factor of a fuse is defined as the ratio of:
a. Minimum fusing current to the rated carrying current
b. Maximum fusing current to the cut off current
c. Maximum fusing current to the prospective current
d. Maximum fusing current to the rated carrying current
a. Minimum fusing current to the rated carrying current
b. Maximum fusing current to the cut off current
c. Maximum fusing current to the prospective current
d. Maximum fusing current to the rated carrying current