A spherical capacitor is formed from two conecentric, spherical, conducting shells separated by vacuum.  The inner sphere has a radius 15.0 cm and capacitance is 116 pF.  What is the radius of the outer sphere, and when the potential difference is 220.0 V, what is the magnitude of charge on each sphere?

Consider a parallel plate capacitor having plates of area 1.4 cm2 that are separated by 0.018 mm of neoprene rubber. You may assume the rubber has a dielectric constant κ = 6.7. a) What is the capacitance in μF?  b) What charge, Q, in coulombs, does it hold when 9.00 V is applied to it?

Problem 13:   Each plate of a parallel-plate capacitor has an area of A = 0.61 m2. The plate separation is 3.0 mm, and one of these plates is shown in the figure. It carries a charge of Q = 2.9 μC, which is concentrated on its inner surface. Imagine a cylindrical Gaussian surface, of radius r = 0.012 m, whose axis is perpendicular to the plates. One end of the cylinder is inside the plate shown and the other end is located between the plates. Both ends are parallel to the plates. Part (a)  What is the flux through surface 1 Φ1, in newton meters squared per coulomb?  Part (b)  What is the flux through surface 2 (the outside of the cylinder not including the ends), in newton meters squared per coulomb?  Part (c)  What is the flux through surface 3 Φ3, in newton meters squared per coulomb?  Part (d)  Using all of your results, input an expression for the field within the capacitor E, in terms of the quantities given in the problem.

Capacitance  Problem 18:   A cylindrical capacitor is made of two concentric conducting cylinders. The inner cylinder has radius R1 = 19 cm and carries a uniform charge per unit length of λ = 30 μC/m. The outer cylinder has radius R2 = 45 cm and carries an equal but opposite charge distribution as the inner cylinder. Part (b)  Calculate the electric potential difference between the outside and the inside cylinders in V.  Part (c)  Calculate the capacitance per unit length of these concentric cylinders in F/m.

A parallel plate capacitor has metal plates, each of area 1.25 m2, separated by 1.80 mm. What charge (in µC) is stored in this capacitor if a voltage of 2.10 ✕ 103 V is applied to it?   µC

An air-filled parallel-plate capacitor has plates of area 2.90 cm? separated by 3.00 mm. The capacitor is connected to a(n) 13.0 V battery. (a) Find the value of its capacitance. pF (b) What is the charge on the capacitor? pC (c) What is the magnitude of the uniform electric field between the plates? N/C

Question 2. An air-filled parallel-plate capacitor has plates of area 2.30 cm? sep- arated by 1.50 mm. The capacitor is connected to a 12.0 V battery. a) Find the value of its capacitance. b) What is the charge on the capacitor? c) What is the magnitude of the uniform electric field between the plates?

A parallel-plate capacitor has 3.5 cm x 3.5 cm electrodes with surface charge densities +1.0 x 10 C/m². A proton traveling parallel to the electrodes at 1.2x105 m/s enters the center of the gap between them. 73 3 K E $ 4 R DE C I BAB F 96 5 T G I 6 B Part A Y By what distance has the proton been deflected sideways when it reaches the far edge of the capacitor? Assume the field is uniform inside the capacitor and zero outside the capacitor. Express your answer with the appropriate units. Ay- Value Submit Provide Feedback MacBook Air H & 7 N HÅ Request Answer U J * 8 M DIE 1 C Units MOSISO ( 9 K DD FO O 1 delete