△V = 119.47

radius r=0.32mm

Draw step and calculate... 

a) the Req of the system

b) find the total current  I

c) calculate the average length of the wire resistors (have to calculate length for individual case and make an average accordingly)

d) System power (P), 

e) the voltage across R1

f) the voltage across R4

g) the current across R2

h) the current across R3

h) calculate battery internal resistance r at max temperature

 for each resistor.

 For reference example 26.2:

  

Transcribed Image Text:

Nichrome wire with radius r = 0.32 has "initial" resistance R1o, R20, R30 and R40 as shown on circuit diagram. These value changes during operation as the temperature increases from 20C to 120C. A 120.0 Vdc (battery) is connected to each end. Nichrome wire with radius r = 0.32 has "initial" resistance R1o, R20, R30 and R40 as shown on circuit diagram. These value changes during operation as the temperature increases from 20C to 120C. A 120.0 Vdc (battery) is connected to each end.

Answer rating: 100% (QA)

Solutions step1 Explanation the behavior of Nichrome wire resistors as they heat up Lets go through each part of the question step by step solution a To calculate the equivalent resistance Req of the ... View the full answer