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  • The reading of ammeter in the  figure shown below is <div class=

The reading of ammeter in the  figure shown below is

Option: 1

4 \mathrm{~A}


Option: 2

6 \mathrm{~A}


Option: 3

8 \mathrm{~A}


Option: 4

12 \mathrm{~A}


Answers (1)

best_answer



Distributing the currents in the circuit according to kirchoff loop law.
In ideal voltmeter current = 0.

\Rightarrow Apply kirchoff's law in loop \mathrm{A B C D A}.
\mathrm{\Rightarrow-3 I_{1}+6+12=0}.
\mathrm{\Rightarrow I_{1}=6 \mathrm{~A} }.

Apply kirchoff's loop law in \mathrm{A F B A}
\mathrm{\Rightarrow 8-\left(I-I_{1}\right) \times 10-6+3 I_{1}=0}
\mathrm{\Rightarrow 10 I-13 I_{1}=2}.
\mathrm{\Rightarrow I=\frac{2}{10}+\frac{13}{10} \times 6=8 \mathrm{~A}}.
\mathrm{\Rightarrow} Reading of ammeter \mathrm{= I=8 \mathrm{~A}}

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Riya

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