Posted by **P** on Wednesday, March 13, 2013 at 12:20am.

Three conducting straight wires (though insulated from each other) are each 2 m long. They are electrically connected to each other only at their ends points A and B. AB = 2 meter.

The wires are cylindrical. One is made of copper, one of aluminum and one of iron. Their radii are 2, 3 and 4 mm, respectively.

a) What is the ohmic resistance between point A and B? Express your answer in Ohms. (you might need to look up the resistivity of these elements).

unanswered

We now attach at B a straight copper wire which is in electrical contact with the 3 wires at B. This 2nd copper wire is identical to the one between A and B. It runs from B to C. The distance AC is 4 m.

(b) What is the ohmic resistance between A and C? Express your answer in Ohms.

unanswered

We now turn AC into a near perfect circle. A is very close to C but it is not touching C.

(c)

What is the ohmic resistance between A and C now? Express your answer in Ohms.

- Physics -
**Anonymous**, Wednesday, March 13, 2013 at 8:51am
Please some one answer.

## Answer This Question

## Related Questions

- Physics - A 550 turn solenoid is 15 cm long. The current in it is 33 A. A 3.0 cm...
- physics - A 570-turn solenoid is 19cm long. The current in it is 32A . A 2.0cm -...
- physics - A 570-turn solenoid is 19cm long. The current in it is 32A . A 2.0cm -...
- physics - an insulated circular ring of diameter 6.50cm carries a 12.0 A current...
- physics - Two long, straight, parallel wires 10 cm apart carry currents in ...
- College Physics - Two long, straight, parallel wires 8.0 cm apart carry currents...
- physics - Two 10 meter long wires are parallel to each other and 5 cm apart.They...
- Physics - (the drawing is of a square with each side equaling L and the ...
- physics - The four wires that lie at the corners of a square of side a= 5.60 cm ...
- Physics - Two parallel straight wires are 1 meter apart. Each wire carries a ...

More Related Questions