In circuit shown below, the resistances are given in ohms and the battery is assumed ideal with emf equal to 3 volt. The voltage across the resistance R4 is 

(1) 0.4 V

(2) 0.6 V

(3) 1.2 V

(4) 1.5 V

Concept Questions :-

Combination of resistors
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If you are provided three resistances 2 Ω, 3 Ω and 6 Ω. How will you connect them so as to obtain the equivalent resistance of 4 Ω 

(1)

(2)

(3)

(4) None of these

Concept Questions :-

Combination of resistors
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The equivalent resistance and potential difference between A and B for the circuit is respectively 

(1) 4 Ω, 8 V

(2) 8 Ω, 4 V

(3) 2 Ω, 2 V

(4) 16 Ω, 8 V

Concept Questions :-

Combination of resistors
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Five equal resistances each of resistance R are connected as shown in the figure. A battery of V volts is connected between A and B. The current flowing in AFCEB will be 

(1) 3VR

(2) VR

(3) V2R

(4) 2VR

Concept Questions :-

Combination of resistors
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For the network shown in the figure the value of the current i is 

(1) 9V35

(2) 5V18

(3) 5V9

(4) 18V5

Concept Questions :-

Combination of resistors
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When a wire of uniform cross-section a, length l and resistance R is bent into a complete circle, the resistance between any two of diametrically opposite points will be :

(1) R4

(2) R8

(3) 4R

(4) R2 

Concept Questions :-

Combination of resistors
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In the circuit given E = 6.0 V, R1 = 100 ohms, R2 = R3 = 50 ohms, R4 = 75 ohms. The equivalent resistance of the circuit, in ohms, is 

(1) 11.875

(2) 26.31

(3) 118.75

(4) None of these

Concept Questions :-

Combination of resistors
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By using only two resistance coils-singly, in series, or in parallel one should be able to obtain resistances of 3, 4, 12, and 16 ohms. The separate resistances of the coil are :

(1) 3 and 4

(2) 4 and 12

(3) 12 and 16

(4) 16 and 3

Concept Questions :-

Combination of resistors
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In the given circuit, the voltmeter records 5 volts. The resistance of the voltmeter in ohms is :

(1) 200

(2) 100

(3) 10

(4) 50

Concept Questions :-

Kirchoff's voltage law
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In the adjoining circuit, the battery E1 has an e.m.f. of 12 volts and zero internal resistance while the battery E has an e.m.f. of 2 volts. If the galvanometer G reads zero, then the value of the resistance X in ohm is 

(1) 10

(2) 100

(3) 500

(4) 200

Concept Questions :-

Grouping of cells
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