In the given figure an ammeter A consists of a 240 coil connected in parallel to a 10 shunt. The reading of the ammeter is ______________ mA.

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Solution

Q.
In the given figure an ammeter A consists of a 240 $Ω$ coil connected in parallel to a 10 $Ω$ shunt. The reading of the ammeter is ______________ mA. [2024]

Ans.
(160)

$R_{A} = \frac{G \cdot S}{G + S} = \frac{240 \times 10}{240 + 10} = \frac{240}{25} Ω = 9.6 Ω$

$R_{eq} = 140.4 + 9.6 = 150 Ω$

$\Rightarrow I = \frac{24}{150} = 160 mA$

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