Question

5. which one is the correct relation of resistance, internal resistance,
terminal velocity and emf​

Answer 1

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+r
E
​


And the Potential difference across the load or the Terminal Voltage can be calculated as:
V=I.R=
R+r
ER
​