An electrician is trying to decide which kind of material to use to wire a house.
carbon steel: conductivity = 1.43 × 10−7, resistance = 1 × 1010
copper: conductivity = 5.96 × 107, resistance = 1.68 × 10-8
gold: conductivity = 4.11 × 107, resistance = 2.44 × 10−8
iron: conductivity = 1 × 107, resistance = 1.0 × 10−7
Based on this information, which material should the electrician use?
(1 point)
A gold
B carbon steel
C iron
D copper
D copper
I think the electrician should use copper because it conducts electricity better than the others. Plus, copper has a great sense of style, and who doesn't want their house wiring to be fashionable?
To determine which material the electrician should use, we need to consider the conductivity and resistance values for each material. The higher the conductivity and the lower the resistance, the better the material is for wiring purposes.
Let's compare the conductivity and resistance values for each material:
- Carbon steel: conductivity = 1.43 × 10^(-7), resistance = 1 × 10^(10)
- Copper: conductivity = 5.96 × 10^(7), resistance = 1.68 × 10^(-8)
- Gold: conductivity = 4.11 × 10^(7), resistance = 2.44 × 10^(-8)
- Iron: conductivity = 1 × 10^(7), resistance = 1.0 × 10^(-7)
Based on these values, we can see that copper has the highest conductivity value and the lowest resistance value among the options given. Therefore, the electrician should use copper to wire the house.
So, the correct answer is:
D) copper
To decide which material the electrician should use, we need to consider the conductivity and resistance of each material.
Conductivity measures how well a material conducts electricity. A higher conductivity means better electrical conductivity.
Resistance measures how much a material resists the flow of electricity. A lower resistance means less resistance to electrical flow.
Looking at the given information, we can compare the conductivities and resistances of the materials:
1. Carbon steel: Conductivity = 1.43 × 10^-7, Resistance = 1 × 10^10
2. Copper: Conductivity = 5.96 × 10^7, Resistance = 1.68 × 10^-8
3. Gold: Conductivity = 4.11 × 10^7, Resistance = 2.44 × 10^-8
4. Iron: Conductivity = 1 × 10^7, Resistance = 1.0 × 10^-7
Based on these values, we can see that copper has the highest conductivity and the lowest resistance among the given options. Therefore, the electrician should use copper to wire the house.
The correct answer is:
D. Copper