Question

plot a graph showing variation of current with resistance connected to cell of EMF 'E ' and internal resistance 'r'​

Answer 1

see attachement,

             Emf = IReq 

Req = r + R 

 Emf = I(r + R) ⇒ I = Emf/(r + R)

 e.g., I is inversely proportional to R

so, graph of I and R will be hyperbolic.

     see in attachement. graph show I-R graph.