Calculation of errors in resistance

[Naja naja]

Given R1=40 with tolerance of 3% and R2=30 with tolerance of 9% find total resistance

a) in series
b) in parallel

 

[Foxhound]

a) 73.8 or 66.1
b) 0.0548 or 0.0624

 

[Tamati]

Nasubiri majibu

 

[Naja naja]

a) 73.8 or 66.1
b) 0.0548 or 0.0624

Njia?

 

[Bujibuji Simba Nyamaume]

Correction of errors

 

[hamis ramaah]

Napita hapo

 

[Foxhound]

Njia?

Sheria ya kutafuta resistance zikiwa series unajumlisha [R1+R2+.......Rⁿ]

Sheria ya kutafuta resistance zikiwa parallel = R1+R2 Misha unagawanya kwa R1xR2

 

[Hunyu]

Mmmh

 

[Lwiva]

Hapo unatakiwa ujue dhana ya tolerance utapata jibu hesabu ndogo sana hiyo

 

[duyudu]

In series Rs=(R1+R2)+(∆R1+∆R2)
=(40+30)+(0.03+0.09)
=(70+/-0.12)ohm

 

[duyudu]

Given R1=40 with tolerance of 3% and R2=30 with tolerance of 9% find total resistance

a) in series
b) in parallel

In series Rs=(R1+R2)+(∆R1+∆R2)
=(40+30)+(0.03+0.09)
=(70+/-0.12)ohm

In parallel
Apply natural logarithm to the equation ln Rp=ln(R1R2/Rs)
ln Rp=lnR1+lnR2-lnRs
Differentiate
∆Rp/Rp=∆R1/R1+..........kama hujaelewa nitafute mi nimechoka Ku type

 

[four eyes]

Hizi ni hesabu za kujua ktk makinikia Kuna dhahabu kiasi gani?

 

[Naja naja]

In parallel
Apply natural logarithm to the equation ln Rp=ln(R1R2/Rs)
ln Rp=lnR1+lnR2-lnRs
Differentiate
∆Rp/Rp=∆R1/R1+..........kama hujaelewa nitafute mi nimechoka Ku type

Sijaelewa hiyo RS ndo nini?

 

[Dragoon]

Nyie fanyeni mahesabu, baadae mtaniletea vyombo vyenu niwatengenezee. Mimi ndio kiboko ya mambo ya resistor katika practice. Naangalia rangi ya michoro yake tu nishajua nguvu yake.

 

[duyudu]

Rs=R1+R2

 

[simplemind]

The tighter the tolerance the more stringent is the manufacturing process as regards material selection, production method , quality control. Tanzania ya viwanda inawezekana.