Two resistors of resistance R1 and R2 having R1 > R2 are connected in parallel. For equivalent resistance R, the correct statement is :

(1) R>R1+R2

(2) R1<R<R2

(3) R2<R<(R1+R2)

(4) R < R1

Concept Questions :-

Combination of resistors
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A wire of resistance R is divided into 10 equal parts. These parts are connected in parallel, the equivalent resistance of such connection will be :

(1) 0.01 R

(2) 0.1 R

(3) 10 R

(4) 100 R

Concept Questions :-

Combination of resistors
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The current in the adjoining circuit will be 

(1) 145ampere

(2) 115ampere

(3) 110ampere

(4) 15ampere

Concept Questions :-

Combination of resistors
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The reading of the ammeter as per figure shown is

(1) 18A

(2) 34A

(3) 12A

(4) 2 A

Concept Questions :-

Combination of resistors
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Three resistors each of 2 ohm are connected together in a triangular shape. The resistance between any two vertices will be 

(1) 4/3 ohm

(2) 3/4 ohm

(3) 3 ohm

(4) 6 ohm

Concept Questions :-

Combination of resistors
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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

Concept Questions :-

Combination of resistors
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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

Concept Questions :-

Combination of resistors
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A current of 2 A flows in a system of conductors as shown. The potential difference (VAVB) will be 

(1) +2 V

(2) +1 V

(3) –1 V

(4) –2 V

Concept Questions :-

Kirchoff's voltage law
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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

Concept Questions :-

Combination of resistors
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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

Concept Questions :-

Combination of resistors
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Difficulty Level: