Question

Correct statement for stationary charge is:-
A.It always produces electric field and magnetic field
B.It produces magnetic fields
C.It consist of quark particles
D.It does not appear to be quantized in daily life

Answer 1

Charge is an entity which is associated with the electric field. When it is stationary it can provide either attractive or repulsive force. When it is in motion, it interacts with the magnetic field. Quantization of charge is of no use at macroscopic or large scale. Protons and electrons are made up of quark particles. Use this basic information to answer this question.

Complete answer:
A stationary charge on a body always produces electric fields only. Whereas, a moving charge produces electric field as well as magnetic field. At macroscopic level, the charges used are huge as compared to the magnitude of electric charge. Hence, quantization of electric charge is of no use at macroscopic level. Therefore, it is ignored that the electric charge is continuous. So, it is said that the charges are not quantized in daily life. The particles like electron, proton, muon, etc. are made up of quarks. These quarks have charges. So, the charges do not consist of quark particles.

Hence, the correct answer is option D i.e. It does not appear to be quantized in daily life.

Note:
To answer these types of questions, students must have clear and deep knowledge about electrostatics. Stationary charges always produce an electric field but a moving charge produces both electric and magnetic fields. Magnetic force does not act on a stationary charge. A stationary charge experiences force only when it is kept in an electric field.