Question
Question: Which of the following is a good conductor of electricity? (A) Gold (B) Mercury (C) Tungsten ...
Which of the following is a good conductor of electricity?
(A) Gold
(B) Mercury
(C) Tungsten
(D) All of the above
Solution
For determining a good conductor of electricity:
It is to be known that as the number of electrons becomes less, the conductor would be better because it takes less energy to cause the atom to shed an electron and contribute to flow of electrical current. Atoms with four electrons are referred to as semiconductors and they are most likely to share an electron and resist current.
Complete step by step solution:
We have been provided with elements: gold, mercury and tungsten, and we need to find which one them is a good conductor of electricity.
So, let us solve the question:
Generally, an electrical conductor is a substance in which electrical charge carriers with the application of voltage make the electrons move easily from atom to atom. Conductivity is the ability to transmit heat or electric current.
Now, conductors are those materials that allow electricity to flow through them easily. If we compare two types of the material then the first one material is said to be a good conductor of electricity if it allows better flow of electricity through it, then that, and the others are called insulators.
So, all the elements gold, mercury and tungsten are a good conductor of electricity.
Therefore, we can conclude that D is the correct answer option.
Note: Since Silver contains a higher number of movable atoms, hence it is the best conductor of electricity. If the electricity passed through it must be able to move the electrons; the freer electrons in a metal, the greater its conductivity, and it is called a good conductor.