Question

Plot a graph showing the variation of current 'I' versus resistance'R', connected to a 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.
  

Answer 2

Answer:

The required graph will be

See below

Explanation:

As we know ,

Current, I= net EMF/ net resistance

Here, net resistance is r+ R

So, I is inversely proportional to R