Chemical Engineering Basics

Q1: X-rays are

A positively charged.

B negatively charged.

C neutral

D of higher wavelength than visible light.

ANS:C - neutral

In the context of particles or objects, "neutral" refers to the absence of any net electric charge. Here's a breakdown of what it means for something to be neutral:

  1. No Net Electric Charge: A neutral object has an equal number of positive and negative charges, resulting in a net charge of zero. This means that the total positive charge is exactly balanced by the total negative charge, resulting in no overall electrical attraction or repulsion.
  2. No Electric Field: Since a neutral object has no net charge, it does not generate an electric field in its vicinity. Electric fields are produced by charged particles or objects, and their strength depends on the magnitude and distribution of electric charges. In the case of a neutral object, any localized positive charge is exactly canceled out by an equal amount of negative charge, resulting in no overall electric field.
  3. No Interaction with Electric Fields: Neutral objects do not experience any net force when placed in an external electric field. This is because the positive and negative charges within the neutral object are uniformly distributed and cancel each other's effects. As a result, neutral objects do not move or accelerate in response to electric fields.
Examples of neutral objects include most atoms, molecules, and particles in their natural states. For instance, electrically neutral atoms have an equal number of positively charged protons in their nuclei and negatively charged electrons in their electron clouds, resulting in overall neutrality. Similarly, molecules can be neutral if they contain an equal number of positively and negatively charged ions or atoms. In summary, being neutral means having no net electric charge, resulting in no electric field and no interaction with external electric fields.



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