10. The resonance frequency of this circuit is 1000 H z. To change the resonance frequency to 2000 H z, replace the capacitor with one having capacitance

Suppose we have a circuit with two capacitors with C1 = 5.2µF and C2 = 11.5µF that are connected in series withan external voltage of 6.2V. What are the voltage drops across each of the capacitors?

A capacitor is the only device in a series circuit with a battery. While remaining hooked upthe plate separation is cut in half. What happens to the energy stored in the capacitor?

1) A parallel-plate capacitor with dimensions of 38 mm by 65 mm and a plate separation of 1.3 mm must have a minimum capacitance of 7 x 10" F when an ac potential of 1000 V is applied at a frequency of 1 MHz. Which of the materials listed below are possible candidates? Why? Dielectric Constant I MHz Dielectric Strength (V/mil)" Material 60 Hz Ceramics Titanate ceramics Mica 15–10,000 50-300 5.4-8.7 Steatite (MgO-SiO;) Soda-lime glass Porcelain 1000-2000 200–350 250 5.5-7.5 6.9 6.9 40–400 250 6.0 6.0 Fused silica 4.0 3.8 Polymers Phenol-formaldehyde Nylon 6,6 Polystyrene Polyethylene Polytetrafluorocthylene " One mil = 0.001 in. These values of dielectrie strength are average ones, the magni- tude being dependent on specimen thickness and geometry, as well as the rate of application and duration of the applied electric field. 5.3 4.8 300–400 4.0 3.6 2.6 400 2.6 500–700 2.3 2.3 450–500 2.1 2.1 400–500