Question

50 points!

A. The object in the diagram above is called a(n)? _____

B. Given only the materials in the diagram, how can the strength of the magnetic field be increased? _____​

Answer 1

A. it is Electromagnet

B. there are 2 ways to increase the magnetic field in this situation.

• by increasing the number of turns of wire in coil
• second, by increasing the current flowing. ( this step can not be achieved as the supply that is battery here, would not increase or decrease its current flow).

hence only by doing first way ( increase number of turns) magnetic field can be increased.