If one wanted to make a 5 Î© resistor from a 22 gauge copperwire, how much wire must be used at 20^o C? what will theresistance of this resistor be if its temperature is raised to100^o C?

answer

watching

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Sixta KovacekLv2

6 Aug 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

A carbon resistor is 9 mm long and has a constant cross section of0.3 mm2. The conductivity of carbon at room temperature is s = 3multiplied by 104 per ohmÂ·m. In a circuit its potential at one endof the resistor is 10 volts relative to ground, and at the otherend the potential is 16 volts. A thin copper wire in the samecircuit is 9 mm long and has a constant cross section of 0.3 mm2.The conductivity of copper at room temperature is s = 6 multipliedby 107 ohm-1m-1. The copper wire is in series with the carbonresistor in the same circuit mentioned above, with one endconnected to the 16 volt end of the carbon resistor. Calculate theresistance R of the copper wire and the potential Vat end at theother end of the wire.
R =
Vat end = V

You can see that for most purposes a thick copper wire in a circuitwould have practically a uniform potential. This is because thesmall drift speed in a thick, high-conductivity copper wirerequires only a very small electric field, and the integral of thisvery small field creates a very small potential difference along th

A resistor made of Nichrome wire is used in an application where its resistance cannot change more than 1.00% from its value at 20 °C. Over what temperature range can it be used?

amethystraven1

Different types of wire are rated according to their gauge. Eachgauge corresponds to a different cross-sectional area byacomplicated formula that is unimportant for our purposes. In theAmerican Wire Gauge (AWG) system, the smaller thegauge, the largerthe diameter of the wire. A #10 AWG wirehas a diameter of 0.100 in.The Underwriters Laboratories,Inc. (UL), which sets many safetystandards for the United States,requires that this gauge of copperwire should carry no more than55.0 A in power transmissionapplications in order to prevent thepossibility of it becoming toohot and causing a fire.

a. What is the resistance of 1,000.0 ft of #10 AWGcopperwire?

b. At what rate would heat energy be dissipated by thislengthof #10 AWG copper wire if it is required to carry the maximumratedcurrent of 55.0 A?