Question

A motorcyclist is making an electric vest that, when connected to the motorcycle's 12 V battery, will warm her on cold rides. She is using 0.22 mm diameter copper wire. What is the purpose of the copper wire in the electric vest?

1) To conduct electricity
2) To provide insulation
3) To increase the resistance
4) To decrease the resistance

Answer 1

The copper wire in the electric vest is used to conduct electricity from the battery, allowing current to flow and generate heat for warmth. Copper's low resistivity and high conductivity make it ideal for electrical applications that require the transport of electric current.

Step-by-step explanation:

The purpose of the copper wire in the electric vest is primarily to conduct electricity. Copper is known for its low resistivity and high conductivity, making it an excellent choice for applications where electric current needs to be transported efficiently. In the context of an electric vest, the copper wire allows the flow of electric current from the motorcycle's battery to generate heat through resistance as the electrons move through the wire. While it may seem counterintuitive, the wire also provides a certain level of resistance necessary for generating heat. However, the primary function of copper wire here is not to increase or decrease resistance, but rather to ensure that electric current can flow to produce warmth.