23 b pls answer the question
B part of 23 question
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Wire A .
Length = l
Radius= r
Area = pie r2
R1 = rho * l/ pie r2
Wire B
Length = 3l
Radius = 3r
Area = pie 9r3
R2 = rho *2l / pie 9r3 = rho * l/ pie * 3r3
total resistance
Rp = rho * l/ 3pie * r3
ratio = rp/ r1 = rho /3 pie r9 divide by rho * l / pie *r3
Rp / R1 = 1 : 9.
I hope help you
Length = l
Radius= r
Area = pie r2
R1 = rho * l/ pie r2
Wire B
Length = 3l
Radius = 3r
Area = pie 9r3
R2 = rho *2l / pie 9r3 = rho * l/ pie * 3r3
total resistance
Rp = rho * l/ 3pie * r3
ratio = rp/ r1 = rho /3 pie r9 divide by rho * l / pie *r3
Rp / R1 = 1 : 9.
I hope help you
Answered by
0
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