A battery of e.m.f. 10 V is connected to resistance as shown in figure. The potential difference VAVB  between the points A and B is 

(1) –2 V

(2) 2 V

(3) 5 V

(4) 2011V

Concept Questions :-

Combination of resistors
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A student has 10 resistors of resistance ‘r’. The minimum resistance made by him from given resistors is :

(1) 10 r

(2) r10

(3) r100

(4) r5

Concept Questions :-

Combination of resistors
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Two wires of same metal have the same length but their cross-sections are in the ratio 3 : 1. They are joined in series. The resistance of the thicker wire is 10 Ω. The total resistance of the combination will be 

(1) 40 Ω

(2) 403Ω

(3) 52Ω  

(4) 100 Ω

Concept Questions :-

Combination of resistors
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The equivalent resistance of the following infinite network of resistances is 

(1) Less than 4 Ω

(2) 4 Ω

(3) More than 4 Ω but less than 12 Ω

(4) 12 Ω

Concept Questions :-

Combination of resistors
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In the figure given below, the current passing through 6 Ω resistor is 

(1) 0.40 ampere

(2) 0.48 ampere

(3) 0.72 ampere

(4) 0.80 ampere

Concept Questions :-

Combination of resistors
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Three equal resistances each of value R are joined as shown in the figure. The equivalent resistance between M and N is 

(1) R

(2) 2R

(3) R2

(4) R3

Concept Questions :-

Combination of resistors
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The equivalent resistance between points A and B of an infinite network of resistances each of 1 Ω connected as shown, is 

(1) Infinite

(2) 2 Ω

(3) 1+52Ω

(4) Zero

Concept Questions :-

Combination of resistors
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In the circuit shown, the point ‘B’ is earthed. The potential at the point ‘A’ is :

(1) 14 V

(2) 24 V

(3) 26 V

(4) 50 V

Concept Questions :-

Combination of resistors
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In the circuit shown below, the cell has an e.m.f. of 10 V and internal resistance of 1 ohm. The other resistances are shown in the figure. The potential difference VAVB is :

(1) 6 V

(2) 4 V

(3) 2 V

(4) –2 V

Concept Questions :-

Combination of resistors
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A wire of resistance R is cut into ‘n’ equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be :

(1) nR

(2) Rn

(3) nR

(4) Rn2 

Concept Questions :-

Combination of resistors
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Difficulty Level: