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  • In the given circuit (Figure), when key is open, reading of ammeter is . Now key is closed then the correct statement is <img alt="" src="https://cdn.entrance360.com/media/uploads/2023/08

In the given circuit (Figure), when key is open, reading of ammeter is . Now key is closed then the correct statement is

Option: 1

 If  \mathrm{\varepsilon_1<I R}, reading of the ammeter is less then I
 


Option: 2

 If I \mathrm{R<\varepsilon_1}, reading of the ammeter is greater than I
 


Option: 3

 If \mathrm{\varepsilon_1<2 I R}, reading of the ammeter will be zero
 


Option: 4

 Reading of ammeter will not change


Answers (1)

best_answer

\begin{aligned} & \mathrm{R\left(i_1+i_2\right)=E_1} \\ & \mathrm{i_2 R+\left(i_1+i_2\right) R=E_2 }\end{aligned}

\mathrm{i_2=\frac{E_2-E_1}{R} }

\mathrm{\left [Initially, E=\frac{E_2 }{R }\right ] }

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Sayak

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