Constants Part A cylindncal caoactor has an inner conductor ot radius 2.8 mm and
ID: 1731051 • Letter: C
Question
Constants Part A cylindncal caoactor has an inner conductor ot radius 2.8 mm and an outer conductor of radius 3.9 separated by vacuum, and the entire capacitor is 3 m long II. The two conductors are What is the capacitance per unit length? pF/m Submit Reguest Anewer Part B The potental of the inner conductor relative to that of the outer conductor is 340 mV. Find the charge (magnitude and sign) on the inner conductor Express your answer with the appropriate units QValue Units Submit Reguest Answer Part C The polert al of the inner conductor rela ? lo t al of the outer conductor s 340 m V Find lhe charge magnitude and sig on the oter conductorExplanation / Answer
(a)
the equation for capacitence of cylinrical conductor is
C= 2pi k eoL/ ln( b/a)
C/L= 2pi k eo/ ln (b/a)
= 2pi 1(8.85 * 10^-12) /ln(3.9/2.8)
=167.7* 10^-12 F/m
= 167.7 pF/m
(b)
Q= CV
= 2pi k eoL/ ln( b/a) V
=1.67* 10^-10 F/m (3) (0.340 V)
=1.7034 * 10^-10 C
(C)
the charge on the outer cyliner is
Q= -1.7034 * 10^-10 C