Which of the following is most likely to be attracted to a magnet? A. A school textbook
B. A piece of glass
C. An electromagnet
D. A copper wire

answer: a. same unit

explanation:

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

answersysvol bloat;

answercollision;