In a parallel plate capacitor with air between the plates, each plate has an area of 6×10−3 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 |
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The capacitance of a system of concentric conducting spherical shells is 2 Î¼F. If the radii of both the shells are doubled, then the capacitance of the system will be:
1. 8 Î¼F 2. 4 Î¼F
3. 1 Î¼F 4. 0.5 Î¼F
Subtopic:  Capacitance |
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The 6 Î¼F capacitor is initially charged to 2 V (i.e. VB−VA=2 V) while the 3 Î¼F capacitor is uncharged. The switch is now closed. The final potential difference across the 3 Î¼F capacitor will be:
    

1. 4 V

2. 43 V

3. 2 V

4. 83 V

Subtopic:  Capacitance |
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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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