Answer:
A. MA=force output/force input
Explanation:
mechanical advantage is the ratio of the load to the effort
To get a uniform field in the central region between the coils, current flows in the same direction in each.
Answer:C
Explanation:BECASE THEY ARE ONE OF THE PEST KILLERS SRY BUT IM THE MYSTER MAN WHOOOSH ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? OH AND PLS FOR BRAINIEST