contestada

At the same temperature, two wires made of pure copper have different resistances. The same voltage is applied at the ends of each wire. The wires may differ in Check all that apply. View Available Hint(s) Check all that apply.(A) length.(B) cross-sectional area.(C) resistivity.(D) amount of electric current passing through them.

Respuesta :

AMB000

Answer:

A and B true, C and D false.

Explanation:

We only know that they have the same resistance and the same voltage is applied to them. We need to remember the formula of resistance of a wire:

[tex]R=\rho \frac{L}{A}[/tex]

Where [tex]\rho[/tex] is the resistivity (a property of the material), L its length and A its cross-sectional area. We could change L and A and still obtain the same R. From this we see that:

A) True. They could have any length.

B) True. They could have any cross-sectional area.

C) False. Resistivity is a property of the material, in this case, copper.

D) False. I=V/R, and both are the same for both wires.

pstnonsonjoku

At the same temperature, length and cross- sectional area of the wires are different.

The resistance of a wire has to do with the opposition offered to the flow of current by the wire.

Resistance depends on;

  • length of wire
  • cross-sectional area

Hence, at the same temperature, length and cross- sectional area of the wires are different.

Learn more about resistance:https://brainly.com/question/17013493

Otras preguntas