The lamp cord is 0.75m long and contains copper wire. What is the wire's resistance?

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The lamp cord is 0.75m long and contains copper wire. What is the wire's resistance?

2007-10-10 08:52:22 · 3 answers · asked by Brittney J 1 in Science & Mathematics ➔ Physics

3 answers

Most lamp cords are 16 gage wire. 16 ga. copper wire has a resistance of 13.4 ohms / km. you can do the math.

2007-10-10 09:13:29 · answer #1 · answered by tronary 7 · 0⤊ 0⤋

completely dependent on the gauge of wire and grade of copper and also weather it's stranded, solid, or what. You can tell by using a multi tester that measures resistance. But in order to use a formula you'd need more information.

2007-10-10 15:55:18 · answer #2 · answered by Anonymous · 0⤊ 0⤋

First responder is correct. Normal lamp cord is 18 gauge, with a nominal resistance of 20.4 milliohms per meter; since you have 1.5 meters of wire (two conductors), it'll be 30.6 milliohms.

2007-10-10 16:02:54 · answer #3 · answered by Anonymous · 0⤊ 0⤋