Combination of Resistor
Combination of Resistor: Overview
This topic covers concepts, such as, Combination of Resistors, Series Combination of Resistors,Distribution of Potential Difference among Resistors in Series and Equivalent Resistance in Series Combination etc.
Important Questions on Combination of Resistor
A wire of resistance is gradually stretched to double its original length. It is then cut into two equal parts. These parts are then connected in parallel across a 4.0 volt battery. The current drawn from the battery is:

A (i) series (ii) parallel combination of two given resistors is connected, one – by – one, across a cell. In which will the terminal potential difference, across the cell, have a higher value?

(i) Calculate the equivalent resistance of the given electrical network between points and .
(ii) Also calculate the current through , if a source is connected between and , and the value of is assumed as .

You are given resistors, each of resistance . These are first connected to get the minimum possible resistance. In the second case, these are again connected differently to get maximum possible resistance. The ratio between the minimum and maximum values of resistance so obtained is

You are given ‘n’ resistors, each of resistance ‘r’. These are first connected to get minimum possible resistance. In the second case, these are again connected differently to get maximum possible resistance. The ratio between the minimum and maximum values of resistance so obtained is

A battery of emf is connected to resistances as shown in the figure. The potential difference between points A and B is

The circuit shown here has two batteries of and and three resistors with a capacitor . How much is the current in the circuit at steady state

resistors, each of resistance are connected in series to a battery of emf and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased times. The value of is:

The current flowing through is :

The equivalent resistance between and as shown in figure is:

The effective resistance in the given circuit between and points is

Find the reading of ideal ammeter

Find the current flowing in resistor in the given circuit.

Find the equivalent resistance between points and for the following figure.

The equivalent resistance of the network shown in figure betweenand is

The current in the circuit is

As shown in the figure, a network of resistors is connected to a battery of with an internal resistance of . The currents through the resistors and are and respectively. The values of and are:

The equivalent resistance between A and B is

The equivalent resistance of the arrangement of resistances shown in adjoining figure between the points A and B is

Four identical resistors each of resistance are connected to battery of and internal resistance as given below. The reading of ideal ammeter and are
