Question

Electric current is to be passed from one body to another. For this purpose, the two bodies must be joined.

• A. Cotton thread
• B. Plastic string
• C. Copper wire
• D. Rubber band

Answer 1

The correct option is C

Copper wire

The explanation for the correct option:

Conductors:

1. Copper is an excellent electrical conductor. Plastic, rubber, and cotton are poor electrical conductors.
2. If metals allow electricity to flow easily through them, they are said to be good conductors of electricity.
3. Electric charges can easily flow through an electrical conductor.
4. The ability of conductors to "conduct" electricity is referred to as conductivity. Such materials provide less resistance to the flow of charges.

Hence, option C is the correct choice.

The explanation for incorrect options:

1. Plastic, rubber, and cotton are poor electrical conductors.
2. There are no free electrons in them so they do not conduct electricity.
3. Hence, options (A),(B), and (D) are incorrect.

Hence, option C is the correct choice.