Question

A cylindrical capacitor has an inner conductor of radius 2.9 mm and an outer conductor of radius3.6 mm . The two conductors are separated by vacuum, and the entire capacitor is 2.8 m long.

Part A

What is the capacitance per unit length?

C/L =		pF/m

Part B

The potential of the inner conductor relative to that of the outer conductor is 380 mV . Find the charge (magnitude and sign) on the inner conductor.

Express your answer with the appropriate units.

Q1 =

Part C

The potential of the inner conductor relative to that of the outer conductor is 380 mV . Find the charge (magnitude and sign) on the otter conductor.

Express your answer with the appropriate units.

Q2 =

Answer 1

Part A the capacitance of a cylindrical conductor is given by TTE In where 1 is the length of the cylinder a and b are inner and outer radius of the cynlindrical conductor Now given that a 2.9mm 2.9x10-1m b 3.6mm 3.6x10m 1-2.8m 2.572x 10-10F/m In Part B As the potential of the inner conductor is higher than the outer, so positive charge is there on the inner conductor and negative charge is on the outer conductor, and the magnitude of both the charges are same V-2.736x10-10c 2.736x10-10c 2.736x1010c