A circuit contains an ammeter, a battery of \( 30 \mathrm{~V} \) P and a resistance \( 40.8 \mat...

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A circuit contains an ammeter, a battery of \( 30 \mathrm{~V} \)
P and a resistance \( 40.8 \mathrm{ohm} \) all connected in series.

W If the ammeter has a coil of resistance \( 480 \mathrm{ohm} \) and a shunt of \( 20 \mathrm{ohm} \), the reading in the ammeter will be :-
(1) \( 1 \mathrm{~A} \)
(2) \( 0.5 \mathrm{~A} \)
(3) \( 0.25 \mathrm{~A} \)
(4) \( 2 \mathrm{~A} \)
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