A coil with an iron core is used as an electromagnet. With 500 loops and a current of 1.5 A, it can exert a lifting force of 30 N. What force would it be able to lift, if the following changes were made?
a. The current was increased to 3.0 A
b. The number of loops was increased to 750 without increasing the length of the coil.
c. Both of the above changes were made together.
a. The current was increased to 3.0 A
b. The number of loops was increased to 750 without increasing the length of the coil.
c. Both of the above changes were made together.