Question

all of the following are true of both magnetism and electricityEXCEPT:

a) like poles and charges repel; opposites attract

b) the strength of attraction and repulsion of electric charges ormagnetic poles vary inversely as the square of the distance betweenthe charges or poles

c) it is possible to isolate a single positive or negative electriccharge or a single north or south magnetic pole

d) the forces of attraction or repulsion between two magnetic poleson either pole, or between two electric charges on either chargeare of equal strength.