Class/Course - Class XII

Subject - Physics

Chapter - Current Electricity

Attention Class XII standard Aspirants! Just Exam provide a platform to all students who want to make practice for various subject online. We prepare this platform on the base of CBSE. If you want to join our unlimited test series, then please write us at about your class/course

Dear User, Kindly login/register to view answer & explanation of each question.
Click here to Login/Sign Up.
Q.1 n identical cells are joined in series with its two cells A and B in the loop with reversed polarities. Emf of each shells is ε and internal resistance r. Potential difference across cell A or B is (here n > 4)
  $\frac{2\varepsilon \left (n - 2 \right )}{n}$
  $\frac{2\varepsilon \left (n + 2 \right )}{n}$
  $\frac{4\varepsilon }{n}$
  $\frac{2\varepsilon }{n}$