> Q. A shunt of resistance $1 , Omega$ is connected across a galvanometer of $120, Omega$ resistance. A current of $5.5$ ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly : – LIVE ANSWER TODAY

Q. A shunt of resistance $1 , Omega$ is connected across a galvanometer of $120, Omega$ resistance. A current of $5.5$ ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly :

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A shunt of resistance $1 , Omega$ is connected across a galvanometer of $120, Omega$ resistance. A current of $5.5$ ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly :

Solution:

The current that will given full scale deflection in the absence of the shunt is nearly equal to the current through the galvanometer when shunt is connected i.e. $I_g$

As $I_{g} = frac{IS}{G+S}$

$= frac{5.5times1}{120+1} = 0.045$ ampere.

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