How are electric charges produced?

Hint: In order to solve the above question we must know what is electric charge. Electric charge is the basic property of matter carried by some elementary particles that governs how the particles are affected by electric field or magnetic field. Production of electric charge may take place by induction, relative motion of current carrying conductor etc.

Complete step by step answer:
Electric charge is the basic property of matter carried by some elementary particles that governs how the particles are affected by electric or magnetic fields. Electric charge can be positive or negative occurs in natural discrete units and can neither be created nor be destroyed.

Various methods by which we can produce charge,
Mechanical actions(pressure) on piezoelectric materials, Mechanical action (brushing) on high resistance insulators(static electricity), Electric field produced by other charges applied to movable charges, Variation of magnetic flux through conductive perimeters (induction), which is done by their own regulation such as in transformers; by relative motion such as in dynamo and alternators, by chemical separated oxidation/reduction reaction(batteries).

Electric charges can also be produced, when ebonite rods are rubbed with fur and they are also produced when glass rods are rubbed with silk.

Note: The electric field containing charges flow from positive to negative charge which are helpful in the medical field for wound healing. The Van de Graff generator is also based on electrostatic principle. Photocopier, laser printers, inkjet printers and electrostatic air filters are all based on the application of electric charge.