XL = jwL = j2nfL X = Inductive Reactance w = Angular Frequency f = Frequency L = Inductance i = Imaginarv unit Where :

The plots below refer to voltage and current for an inductor. Determine the value of the inductance, L.

For a given RC charging circuit with R 82KOhms, C 150UF and Vs 18 V, i. Calculate the capacitor charging voltage at t- ii. Specify the charging current at 2T where T= RC. iii. Explain the effect in the charging period if the value of R is doubled with the capacitance value of C kept constant. Prove your answer by computing the resulting full-charge periods when R is 82KOhms and when R is doubled with C kept constant. %3D (1 mark) (1 mark) 3D3T. (2 marks)

switch In the figure, suppose the switch has been closed for a time interval sufficiently long for the capacitor to become fully charged. Find (a) The steady-state current in each resistor. (b) The charge Q on the capacitor. (c) The switch is now opened att = 0. Immediately after the switch is opened, what is the current through 1. R = 8.00 N E = 42.0 V! R2 6.00 0 %3D R3 = 3.00 N :C 4.00 µF each resistor?

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.

Please explain procedure

R R2 E-

At a potential of 7000 V, a simple parallel-plate capacitor will be built to store charge. The capacitor has a separation distance of 0.21 mm between plates and a plate area of 0.030m2.The dielectric constant of a material with a dielectric constant of 6.5 is positioned.in the space between the plates Compute the capacitance of the capacitor and compute the magnitude of the charge stored on each plate.Then,If the capacitance in above  has to be increased, choose one acceptable dielectric material from Table 2 below to use between the plates.Justify your mathematical decision.

A certain parallel-plate capacitor consists of two plates, each with area 200 cm2, separated by a 0.4 cm air gap. If the capacitor is connected across a 400-V source. Draw the diagram a. Determine the energy stored on it. b. Determine the energy stored if there is a dielectric material with constant of 2.5 inserted between the plates.

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