There are n similar conductors each of resistance R. The resultant resistance comes out to be x when connected in parallel. If they are connected in series, the resistance comes out to be :

(1) x/n2

(2) n2x

(3) x/n

(4) nx

Subtopic:  Combination of Resistors |
 80%
From NCERT
PMT - 2004
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Equivalent resistance between A and B will be 

(1) 2 ohm

(2) 18 ohm

(3) 6 ohm

(4) 3.6 ohm

Subtopic:  Combination of Resistors |
 78%
From NCERT
PMT - 1981
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Referring to the figure below, the effective resistance of the network is 

(1) 2r

(2) 4r

(3) 10r

(4) 5r/2

Subtopic:  Combination of Resistors |
 90%
From NCERT
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Two resistances are joined in parallel whose resultant is 68 ohm. One of the resistance wire is broken and the effective resistance becomes 2Ω. Then the resistance in ohm of the wire that got broken was 

(1) 3/5

(2) 2

(3) 6/5

(4) 3

Subtopic:  Combination of Resistors |
 79%
From NCERT
PMT - 1976
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The equivalent resistance of resistors connected in series is always :

(1) Equal to the mean of component resistors

(2) Less than the lowest of component resistors

(3) In between the lowest and the highest of component resistors

(4) Equal to the sum of component resistors

Subtopic:  Combination of Resistors |
 85%
From NCERT
PMT - 1984
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A cell of negligible resistance and e.m.f. 2 volts is connected to a series combination of 2, 3, and 5 Ω. The potential difference in volts between the terminals of 3 Ω resistance will be :

(1) 0.6 V

(2) 2/3 V

(3) 3 V

(4) 6 V

Subtopic:  Combination of Resistors |
 82%
From NCERT
PMT - 1976
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Four wires of equal length and of resistances 10 ohms each are connected in the form of a square. The equivalent resistance between two opposite corners of the square is :

(1) 10 ohm

(2) 40 ohm

(3) 20 ohm

(4) 10/4 ohm

Subtopic:  Combination of Resistors |
 84%
From NCERT
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Two resistors are connected (a) in series (b) in parallel. The equivalent resistance in the two cases is 9 ohm and 2 ohms respectively. Then the resistances of the component resistors are :

(1) 2 ohm and 7 ohm

(2) 3 ohm and 6 ohm

(3) 3 ohm and 9 ohm

(4) 5 ohm and 4 ohm

Subtopic:  Combination of Resistors |
 88%
From NCERT
PMT - 1984
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Resistors of 1, 2, 3 ohm are connected in the form of a triangle. If a 1.5-volt cell of negligible internal resistance is connected across a 3-ohm resistor, the current flowing through this resistance will be :

(1) 0.25 amp

(2) 0.5 amp

(3) 1.0 amp

(4) 1.5 amp

Subtopic:  Combination of Resistors |
 57%
From NCERT
PMT - 1984
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Resistances of 6 ohm each are connected in the manner shown in adjoining figure. With the current 0.5 ampere as shown in figure, the potential difference VPVQ is 

(1) 3.6 V

(2) 6.0 V

(3) 3.0 V

(4) 7.2 V

Subtopic:  Combination of Resistors |
 85%
From NCERT
PMT - 1989
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