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The combined resistance of galvanometer of resistance 500 ohm and shunt is 25 ohm calculate the value of shunt

Asked by ashraf.ma4444 22nd February 2019, 11:02 AM
Answered by Expert
Answer:
The value of a combination of resistance of galvanometer and shunt resistance is, Req = 500 Ω
The resistance of galvanometer, G = 25 Ω
 
We know, 
 
1 over R subscript e q end subscript equals space 1 over G plus 1 over S
Thus, the value of shunt resistance is,
 
1 over S equals 1 over R subscript e q end subscript minus 1 over G

1 over S equals 1 over 25 minus 1 over 500
therefore space S space equals space 26.31 capital omega
 
Thus, shunt resistance, S = 26.31 Ω
Answered by Expert 22nd February 2019, 11:59 AM
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