What will not affect strength of a electromagnet?

The main factors that affect the strength of an electromagnet are: Number of turns on the coil of wire around the core. Strength of the current applied. The material of the coil.

The main factors that affect the strength of an electromagnet are: Number of turns on the coil of wire around the core. Strength of the current applied. The material of the coil. Number of coils of wire

Number/voltage of batteries

Properties of the core

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

show the wavelengths of a wave. show the crests of a wave.