A galvanometer is connected in series with a wire ‘AB’ through which a current ‘I0’ is flowing. When this galvanometer is shunted with a 4Ω resistance, the deflection is reduced to one-fifth. If the galvanometer is further shunted with a 2Ω wire, current flowing in galvanometer is (given main current (I0) remains same)

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A galvanometer is connected in series with a wire ‘AB’ through which a current ‘I₀’ is flowing. When this galvanometer is shunted with a 4 $Ω$ resistance, the deflection is reduced to one-fifth. If the galvanometer is further shunted with a 2 $Ω$ wire, current flowing in galvanometer is (given main current (I₀) remains same)

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$5 I_{0} / 13$

$I_{0} / 13$

$I_{0} / 5$

$I_{0} / 8$

answer is A.

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