Arrangement of Resistors in Circuits

IMPORTANT

Arrangement of Resistors in Circuits: Overview

This topic covers concepts such as, Resistors in Parallel Combination, Equivalent Resistance in Series Combination, Distribution of Current in Parallel Resistors and Distribution of Potential in Series Resistors etc.

Important Questions on Arrangement of Resistors in Circuits

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

MEDIUM
IMPORTANT

In the circuit, shown in the figure, the ammeter reading is

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EASY
IMPORTANT

A wire is broken in four equal parts. A packet is formed by keeping the four wires together. The resistance of the packet in comparison to the resistance of the wire will be

EASY
IMPORTANT

Find the magnitude of potential difference (in volt) between A and B in the given circuit.

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EASY
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10 resistors each of 10 Ω resistance when connected together give minimum equivalent resistance R1 and maximum equivalent resistance R2 among various possible combinations. So R2R1 is equal to

EASY
IMPORTANT

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

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EASY
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The current I in the circuit is

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EASY
IMPORTANT

In the given dc circuit, a voltmeter whose resistance is 6000 ohm is used to measure the voltage drop across the 3000 ohm resistor. Determine the % difference in the voltmeter reading that is observed when compared to the true voltage across 3000 ohm resistor when the voltmeter is not connected.

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HARD
IMPORTANT

Consider the following electric circuit
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1) Which two resistors are connected in series?
2) Which two resistors are connected in parallel?
3) If every resistor is 2 Ω, what current will flow in the circuit?

MEDIUM
IMPORTANT

The resistance of 5 Ω15 Ω20 Ω and 10 Ω are connected as shown in the circuit. Find the resultant resistance in the circuit.

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EASY
IMPORTANT

For the following circuit, the potential difference between x and y is

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MEDIUM
IMPORTANT

If we connect two resistance in series then their equivalent resistance is 25 ohm and if we connect them in parallel then it is 4 ohm. What is the value of each resistance?

MEDIUM
IMPORTANT

An infinite ladder network of resistances is constructed with 1 Ω and 2 Ω resistances. The 6 V battery between A and B has negligible internal resistance. The equivalent resistance between A and B is

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HARD
IMPORTANT

Consider the figure shown below. The resistance of the arrangement between the terminals A and B is:

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EASY
IMPORTANT

The figure shows  a circuit in which sixteen resistors each of resistance 5 Ω are connected to a battery of emf24 V . The current in  branch ab is

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EASY
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'n' identical resistors are taken. 'n2' resistors are connected in series and the remaining are connected in parallel. The series  connected group is kept in the left gap of a meter bridge and the parallel connected group in the right gap. The distance of  the balance point in cm from the left end of the wire is
 

MEDIUM
IMPORTANT

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

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HARD
IMPORTANT

Twelve wires each of resistance r ohm are connected in the form of a skeleton cube. Find the equivalent resistance of the cube when a cell is connected across any one of the wires forming the cube.