Question

Derive the relation between internal resistance,external resistance and potential difference.

Answer 1

Answer:

Let E be the e.m.f and V be the terminal voltage 

The current delivered ( I ) to a load ( R) from a cell with internal resistance (r) can be calculated as:

I=R+rE

And the Potential difference across the load or the Terminal Voltage can be calculated as:

V=I.R=R+rER

Explanation:

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