The equivalent resistance between P and Q in the given figure, is

(1) 50 Ω

(2) 40 Ω

(3) 30 Ω

(4) 20 Ω

Concept Questions :-

Combination of resistors
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If each of the resistance of the network shown in the figure is R, the equivalent resistance between A and B is

(1) 5 R

(2) 3 R

(3) R

(4) R/2

Concept Questions :-

Combination of resistors
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The equivalent resistance of the following diagram A and B is

(1) $\frac{2}{3}\Omega$

(2) 9 Ω

(3) 6 Ω

(4) None of these

Concept Questions :-

Combination of resistors
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Thirteen resistances each of resistance R ohm are connected in the circuit as shown in the figure below. The effective resistance between A and B is

(1) 2R Ω

(2) $\frac{4R}{3}\text{\hspace{0.17em}\hspace{0.17em}}\Omega$

(3) $\frac{2\text{\hspace{0.17em}}R}{3}\text{\hspace{0.17em}\hspace{0.17em}}\Omega$

(4) R Ω

Concept Questions :-

Combination of resistors
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For what value of unknown resistance X, the potential difference between B and D will be zero in the circuit shown in the figure

(1) 4 Ω

(2) 6 Ω

(3) 2 Ω

(4) 5 Ω

Concept Questions :-

Combination of resistors
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Which arrangement of four identical resistances should be used to draw maximum energy from a cell of voltage V

(1)

(2)

(3)

(4)

Concept Questions :-

Combination of resistors
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An unknown resistance R1 is connected in series with a resistance of 10 Ω. This combinations is connected to one gap of a metre bridge while a resistance R2 is connected in the other gap. The balance point is at 50 cm. Now, when the 10 Ω resistance is removed the balance point shifts to 40 cm. The value of R1 is (in ohm

(1) 60

(2) 40

(3) 20

(4) 10

Concept Questions :-

Combination of resistors
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A wire has a resistance of 6 Ω. It is cut into two parts and both half values are connected in parallel. The new resistance is :

(1) 12 Ω

(2) 1.5 Ω

(3) 3 Ω

(4) 6 Ω

Concept Questions :-

Combination of resistors
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Six equal resistances are connected between points P, Q and R as shown in the figure. Then the net resistance will be maximum between

(1) P and Q

(2) Q and R

(3) P and R

(4) Any two points

Concept Questions :-

Combination of resistors
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The total current supplied to the circuit by the battery is

(1) 1 A

(2) 2 A

(3) 4 A

(4) 6 A

Concept Questions :-

Combination of resistors
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Difficulty Level: