Question

Kanchana went to the market to purchase wire for its electrical connection to be done at her home. The shopkeeper showed him two wires, copper and iron, having the same length and the same radius. You are a student in class tenth. Help Kanchana:

a) Choose copper wire for better conductivity
b) Choose iron wire for lower cost
c) Ask for more information to make an informed decision
d) Ignore the choice as it doesn't matter

Answer 1

Kanchana should choose copper wire for better conductivity. Copper is a great conductor of electricity, allowing for efficient electrical connection in her home.

Step-by-step explanation:

Of the options given, Kanchana should choose copper wire for better conductivity. Copper is a great conductor of electricity and has the highest electrical conductivity rating among nonprecious metals. This means that electrons can easily flow through copper wire, allowing for efficient electrical connection in Kanchana's home. Additionally, copper wire has high tensile strength and ductility, making it suitable for electrical wiring.

Other materials used for wiring include silver, gold, and aluminum. Silver has an even higher electrical conductivity than copper, but it is too expensive to use. Gold and silver wires are used for special applications. Aluminum wires, on the other hand, have a higher resistivity than copper, which reduces their conductivity.