C. strength of an electromagnet Purpose: to show how electromagnetic strength is affected by number of coils, magnitude of current, and length of wire used in coils Procedure: make various solenoids: one with 25 turns, one with 50 turns using 2X the length of wire, one of smaller diameter with 25 turns, one of smaller diameter with 50 turns;
(one with 50 turns; using; 2X; the length of wire)
one with 50 turns
using
2X the length of wire