Q. 323.5( 8 Votes )
A cylindrical cap
Answer :
Radius of outer cylinder(R) = 1.5cm = 0.015m
Radius of inner cylinder(r) = 1.4cm = 0.014m
Charge on the inner cylinder(q) = 3.5m = 3.5 × 10-6C
Length of a co-axial cylinder(l) = 15cm = 0.15m
Capacitance of a co-axial cylinder of radii R and r, is given as:
where ϵ0 = Permittivity of free space = 8.8510-12N-1 m-2 C2
Therefore,
(Trick: Multiply by 2.303 to convert loge to log10)
∴ C = 1.210-10F
Potential difference of the inner cylinder,
∴
∴ V = 2.29104V
Therefore, Capacitance = 1.210-10F
Potential difference = 2.29104V
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