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An ammeter gives full scale deflection with a deflection for a current of `0*05A`. Calculate the length of shunt wire required to convert the galvanometer into an ammeter of range 0 to `5A`. The diameter of the shunt wire is `2mm` and its resistivity is `5xx10^-7Omegam`. |
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Answer» Correct Answer - `3*174m` in parallel `S=(I_gG)/(I-I_g)=(1xxG)/(10-1)=G/9Omega`, Resistance of ammeter formed `R_p=(SxxG)/(G+S)=((G//9)xxG)/(G+G//9)=(G//9)/(10//9)=G/10` `:. R_p/S=(G//10)/(G//9)=9/10` |
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