Question

Which of the following substances offer very low resistance?

• A. nichrome
• B. water
• C. graphite
• D. steel

Answer 1

The correct option is D

steel

Explanation of incorrect option:

Resistivity: As we know the capability of any material to resist the flow of charge is known as resistivity. Water, nichrome, and graphite have a higher resistivity as the number of electrons are less in these materials when compared with steel.

Explanation of correct option:

As we know that steel is an alloy made from metals and have a larger number of free electrons as compared to other options so it has a very low resistivity.

So, the correct answer is (d)