Three capacitors connected in series have a capacitance of 9 pF each. The potential difference across each capacitor if the combination is connected to a 120 V supply is:
1. 10 V 
2. 20 V 
3. 30 V 
4. 40 V 

Subtopic:  Capacitance |
 83%
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In a parallel plate capacitor with air between the plates, each plate has an area of 6×103 m2, and the distance between the plates is 3 mm. The capacitance of the capacitor is:
1. 16.12 pF
2. 17.71 pF
3. 15.01 pF
4. 11.32 pF

Subtopic:  Capacitance |
 84%
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What is the area of the plates of a 2 F parallel plate capacitor, given that the separation between the plates is 0.5 cm?
1. 1100 km2
2. 1130 km2
3. 1110 km2
4. 1105 km2

Subtopic:  Capacitance |
 74%
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A spherical capacitor has an inner sphere of radius 12 cm and an outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5 μC. The space between the concentric spheres is filled with a liquid of dielectric constant 32. The capacitance of the capacitor is:
1. 4.0×109 F
2. 4.5×109 F
3. 5.5×109 F
4. 3.3×109 F

Subtopic:  Capacitance |
 58%
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A cylindrical capacitor has two co-axial cylinders of length 15 cm and radii 1.5 cm and 1.4 cm. The outer cylinder is earthed and the inner cylinder is given a charge of 3.5 μC.  The capacitance of the system is:
1. 3.4×1010 F 
2. 1.2×1010 F
3. 4.8×109 F  
4. 2.5×109 F  

Subtopic:  Capacitance |
 53%
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