Question

Changing the current changes the ____ of an electromagnet.

strength
direction
charge
both a and b

Answer 1

i think it was both a and b....

Answer 2

i think it is a

Answer 3

you sure?

Answer 4

yeah i am sure about that

Answer 5

ok thanks for ur help :)

Answer 6

because zhang it is return in ur question that only current is changing and it is not mentioned in ur question whether direction of current is chnaging so the answer (a) is right .if it would have returned that the direction of current is also changing than the direction of electromagnet would have changed too i hope u understood.....