Khan Academy Static

In these videos and articles you'll learn how electric motors rely on a magnetic force that can cause a torque which rotates a loop of wire. You'll also learn how commutators allow the direction the the current to switch, which causes the motor to continue turning.

10166_Electric_motors_part_3_.html

10167_The_dot_product.html

10169_Calculating_dot_and_cross_products_with_unit_vector_notation.html

10165_Electric_motors_part_2_.html

10168_Dot_vs_cross_product.html

10164_Electric_motors_part_1_.html