CBSE Class 12-science Answered
solve
Asked by | 05 Jan, 2010, 08:45: PM
Expert Answer
Capacitance of a spherical capacitor,
C =4πε0/(1/a - 1/b)
To find the capcacitance of a sphere we assume the other concentric sphere is at infinite distance.
C = 4πε0a = 1.8πε0 ......... a = 90/2 = 45 cm
For parallel plate capacitor,
A = πR2 = 9πx10-4
C = ε0A/d
d = ε0A/C
= 9πε0x10-4/1.8πε0
= 500 μF
Regards,
Team,
TopperLearning.
Answered by | 05 Jan, 2010, 09:24: PM
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