Question

a cell of EMF E and internal resistance r is connected across external resistance R(R>>r) the p.d across r is ​

Answer 1

Answer:

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Explanation:

Terminal potential drop/source emf

In order to find V(terminal voltage), apply voltage division rule.

Voltage division rule:

Voltage drop across "nr"= E × nr/nr+r.

V = E× nr/r(n+1).

=E × n/(n+1)

implies, V/E = n/n+1.

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