Answer the following question. A cell of emf E and internal resistance r is connected across a variable resistor R. Plot the shape of graphs showing a variation of terminal voltage V - Physics

Advertisement
Advertisement
Graph

Answer the following question.

A cell of emf E and internal resistance r is connected across a variable resistor R. Plot the shape of graphs showing a variation of terminal voltage V with (i) R and (ii) circuit current I.

A cell emf of (E) and internal resistance. (r) is connected across a variable load resistance (R). Draw plots showing the variation of terminal voltage V with (i) R and (ii) the current (I) in the load.

Advertisement

Solution

Terminal Voltage V can be related to R by the following relation:

(i) `V = (ER)/(R+r)`

⇒ `V = (E)/(1+r/R)`

(ii) Terminal Voltage V can be related to I by the following relation: 

V = E - IR

  Is there an error in this question or solution?
2019-2020 (February) Delhi (Set 2)

Video TutorialsVIEW ALL [1]

Share
Notifications



      Forgot password?
Use app×