question_answer

The incorrect option in the given circuit if the reading of ammeter is zero is

A) The value of \[{{\varepsilon }_{1}}\]will be \[\frac{\varepsilon \left( R+r \right)}{R}\]

B) Current in R is \[\frac{\varepsilon {{  }_{1}}}{r+R}\]

C) Value of \[\varepsilon {{  }_{1}}\], will be\[\varepsilon  \]

D) Potential across 2R is zero.