Combination of Resistor

IMPORTANT

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

EASY
IMPORTANT

A wire of   20 Ω  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:

EASY
IMPORTANT

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?

HARD
IMPORTANT

(i) Calculate the equivalent resistance of the given electrical network between points A and B.

(ii) Also calculate the current through CD, if a 10 V DC source is connected between A and B, and the value of R is assumed as   2 Ω .

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EASY
IMPORTANT

You are given n resistors, each of resistance r. 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

EASY
IMPORTANT

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

EASY
IMPORTANT

A battery of emf 10 V is connected to resistances as shown in the figure. The potential difference between points A and B is

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EASY
IMPORTANT

The circuit shown here has two batteries of 8.0 V and 16.0 V and three resistors 3 Ω, 9 Ω, 9 Ω with a capacitor 5 μ. How much is the  current I in the circuit at steady state 

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EASY
IMPORTANT

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

MEDIUM
IMPORTANT

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The current flowing through R2 is :

EASY
IMPORTANT

The equivalent resistance between A and B as shown in figure is:

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EASY
IMPORTANT

The effective resistance in the given circuit between A and B points is

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MEDIUM
IMPORTANT

Find the reading of ideal ammeter

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MEDIUM
IMPORTANT

Find the current flowing in 3 Ω resistor in the given circuit.

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EASY
IMPORTANT

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

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EASY
IMPORTANT

The equivalent resistance of the network shown in figure between A and B is 

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EASY
IMPORTANT

The current I in the circuit is

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MEDIUM
IMPORTANT

As shown in the figure, a network of resistors is connected to a battery of 24 V with an internal resistance of 3 Ω. The currents through the resistors R4 and R5 are I4 and I5 respectively. The values of I4 and I5 are:

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MEDIUM
IMPORTANT

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The equivalent resistance between A and B is 

HARD
IMPORTANT

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

Four identical resistors each of resistance 2 Ω are connected to battery of 20 V and internal resistance 2 Ω as given below. The reading of ideal ammeter A1 and A2 are

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