Which of the following is good conductor of electricity? A) Tap water B) Sea water C) Both ‘A & B’ D) Distilled water

By BYJU'S Exam Prep

Updated on: September 13th, 2023

Tap and sea water are good conductors of electricity. In some materials, there exist electrically charged electrons. Electrons are charged at particular points on the material, which causes the electrons to move and electricity to flow through them. A material’s conductivity determines whether electricity can go through it. Depending on their conductivity, materials can be classified as conductors, insulators, or superconductors. An excellent conductor of electricity has a very straightforward electron flow. Metals, in general, and silver, in particular, make strong electrical conductors.

What is a Good Conductor of Electricity?

Although pure silver is the greatest metal for conducting electricity, it is not the one that is used to do so most commonly. The extensive usage of pure silver has a few drawbacks. The skin effect, or the unequal distribution of current that can occur with high-frequency currents, is an issue with metal that develops over time due to corrosion. Running silver wire through a structure is simply too costly, which is the second drawback. Running it costs a lot more than doing so for copper or aluminum.

Types of Good Conductors of Electricity:

  • Metals: Silver, Copper, and Gold are some of the top metal conductors. Although it has a little lower conductivity than copper, aluminum is still among the greatest electrical conductors. It is most frequently used in conjunction with copper in the internal wiring of homes.
  • Non-Metal: Certain non-metals are excellent electrical conductors. For instance, graphite, made of carbon, is a particularly effective conductor of electricity. Only three of the four carbon atoms are employed for bonding when looking at the graphite structure. 
  • Ionic conductors: Ionic conductors are conductors that exist in solution form. As an ionic solution and effective conductor of electricity, salt water is one example.
  • Semiconductors: Despite having inferior electrical conductivity compared to conductors, semiconductors have their applications. Germanium (Ge) and silicon (Si) are some examples of semiconductors.

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