Question

Whar is a magnetic field. On what factors does its streangth depend?

Answer 1

  

Magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

The strength of the magnetic field produced by a current carrying solenoid depends on:

The number of turns - larger the number of turns, greater is the magnetism produced The strength of the current - when current increases, magnetism also increases Nature of 'core-material' used in making the solenoid - if we use soft-iron as a core for the solenoid, then it produces the strongest magnetism