Four capacitors each of capacity 3 μF are connected as shown in the adjoining figure. The ratio of equivalent capacitance between A and B and between A and C will be:

      

1. 4: 3

2. 3: 4

3. 2: 3

4. 3: 2

Subtopic:  Combination of Capacitors |
 70%
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A parallel plate condenser is filled with two dielectrics as shown. Area of each plate is A metre2 and the separation is t metre. The dielectric constants are k1 and k2 respectively. Its capacitance in farad will be:

      

1. ε0At(k1+k2)

2. ε0At.k1+k22

3. 2ε0At(k1+k2)

4. ε0At.k1k22

Subtopic:  Dielectrics in Capacitors |
 61%
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Three condensers each of capacitance 2F are put in series. The resultant capacitance is 

(1) 6F

(2) 32F

(3) 23F

(4) 5F

Subtopic:  Combination of Capacitors |
 89%
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Four condensers are joined as shown in the adjoining figure. The capacity of each is 8 μF. The equivalent capacity between the points A and B will be

(1) 32 μF

(2) 2 μF

(3) 8 μF

(4) 16 μF

Subtopic:  Combination of Capacitors |
 75%
From NCERT
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The capacities and connection of five capacitors are shown in the adjoining figure. The potential difference between the points A and B is 60 volts. Then the equivalent capacity between A and B and the charge on 5 μF capacitance will be respectively

(1) 44 μF; 300 μC

(2) 16 μF; 150 μC

(3) 15 μF; 200 μC

(4) 4 μF; 50 μC

Subtopic:  Combination of Capacitors |
 74%
From NCERT
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Four plates of the same area of cross-section are joined as shown in the figure. The distance between each plate is d. The equivalent capacity across A and B will be

(1) 2ε0Ad

(2) 3ε0Ad

(3) 3ε0A2d

(4) ε0Ad

Subtopic:  Combination of Capacitors |
 73%
From NCERT
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In the adjoining figure, four capacitors are shown with their respective capacities and the P.D. applied. The charge and the P.D. across the 4 μF capacitor will be

(1) 600 μC; 150 volts

(2) 300 μC; 75 volts

(3) 800 μC; 200 volts

(4) 580 μC; 145 volts

Subtopic:  Combination of Capacitors |
From NCERT
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In the connections shown in the adjoining figure, the equivalent capacity between A and B will be:

     

1. 10.8 μF

2. 69 μF

3. 15 μF

4. 10 μF

Subtopic:  Combination of Capacitors |
 72%
From NCERT
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2 μF capacitance has potential difference across its two terminals 200 volts. It is disconnected with battery and then another uncharged capacitance is connected in parallel to it, then P.D. becomes 20 volts. Then the capacity of another capacitance will be 

(1) 2 μF

(2) 4 μF

(3) 18 μF

(4) 10 μF

Subtopic:  Capacitance |
 73%
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The resultant capacitance across 300 v battery in the figure shown is equal to

(1) 1 μF

(2) 31120 μF

(3) 2 μF

(4) 12031μF

Subtopic:  Combination of Capacitors |
 83%
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