how mobile phones make use of chemical , lightning and magnatic effects? lease give a simple answer !

 By a mechanism that is not fully understood, charges in a thundercloud are separated such that the lower portion of a cloud takes on a negative charge while the upper portion is positive.  In addition to the negative charge on the base of the cloud, there are small pockets of positive charge on the base.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

the answer to this is proletariats.

hope this : )