Question

Describe any two ways in which strength of magnetic field produce by solenoid can be increased

Answer 1

Answer:

increasing the number of turns in the solenoid

inserting a iron core in the solenoid

Explanation:

higher the turns, higher the amount of current carried  by it thus increasing magnitude of magnetic field.

and on inserting iron core its iron's magnetic field will add up to the solenoid's magnetic field.