Question

Problem 22b

Answer 1

Given information

Given Data : 

 

Assuming three resistors  as   , and and also Internal resistance are connected to a battery .

 

The current flow through each resistor:

 

 

 

 

 

 

 

 

Step-by-step explanation

Step 1.

Consider three resistors   are as shown in the figure :

 

 

Using the concept of  parallel and series resistance of a resistor :

 

Case 1:

 

When the switch is closed :

 

From Figure, The equivalent resistance is given by :

 

 

 

 

Case 2:

 

When the switch is opened:

 

From Figure, The equivalent resistance is given by :

 

 

 

By Comparing Equation (1) and (2) of equivalent resistance it is clear that equivalent resistance increases when the switch is opened.