Explain the statement “the current always leads the voltage across a capacitor by 90°

Optional practice problems: 1) The figure below shows a parallel-plate capacitor that is connected to a battery (assume negligible resistance in the wires that connect the capacitor to the battery). a) While the battery is still charging the capacitor, rank the potential at points A-E, from lowest to highest BC D E b) After the capacitor is fully charged, rank the potential at points A-E, from lowest to highest. c) The battery is now disconnected from the capacitor and a piece of dielectric material is inserted between the plates. Is the potential difference between points A and E, than, the same as or larger than the potential difference across the battery? Explain your smaller reasoning

what is meant by capacitor leakage, and what part of the capacitor contributes to how much leakage a capacitor will have?

What is the equation thst represents the relationship between charge, capacitance and voltage for a capacitor.

Please help.

3. (a) (b) An emf, E = 12 V, is wired to a solenoid with self-inductance, L= 0.44 H, two resistors, R₁ = 162, and R₂ = 92, and a two-way switch as shown in the diagram. You first set the switch to position a ... How much energy will be stored in the inductor a long time after you set the switch to position a? L 000 R₁ S R₂ a E You move the switch to position b, starting over at t = 0. Calculate the current through, and voltage across, the inductor immediately after you move the switch from a to b.

What are very rough estimates of the graphs of capacitor voltage vs. time and resistor voltage vs. time while charging and discharging?

Q6. Explain why an a.c capacitor that is working in an a.c circuit will get hot, whereas a d.c capacitor working in a d.c circuit of the same voltage will not get hot.

What is the result of increasing the frequency of the applied voltage to a capacitor? A. Decreased capacitive reactance. B. Decreased current flow. C. Increased capacitive reactance. D. Increased voltage. 9.

Mention an experimental procedure to test the correct operation of a capacitor