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An RC circuit has an unknown resistance and an initially uncharged capacitor of 515 x 10^-6 F. When connected to a source potential, it takes the capacitor 25.5 s to become 90% fully charged. What is the resistance of the circuit? Enter a number rounded to the nearest 100 place.

Given the equation, V =Voe-(2.6x1 )t, at what time will %3D oe the voltage drop by its original value? Select one: a. t= 2566 s b. t= 2666 s C. t= 2746 s d. t 2646 s Given the equation, V – Vne RC what size of resistor would be %3D required to drop the voltage on a 250µF capacitor to its original voltage in 2 min.? Select one: a. R= 470 k2 b. R= 450 k 2 %3D R = 460 k2 С. d. R= 440 k

The figure shows a simple RC circuit consisting of a 100.0 V battery in series with a C = 10.0 μ F capacitor and a R = 4.3 × 105 resistor. Initially, the switch S is open and the capacitor is uncharged. 100.0 V A) 1.1 x 10-³ C B) 2.9 × 10-3 C C) 3.7 x 104 C D) 5.2 x 10-4 C E) 6.6 × 104 C I S R 10.0 µF How much charge q is on the capacitor 2.0 s after the switch is closed? (Hint: First compute the final charge on the capacitor and the RC circuit's time constant.)

In the figure below is a circuit with four resistors and a battery. The battery has an emf of E = 10.65 V and a current of I. The resistance of each resistor is related to some resistance R as follows: R1 R, R2 2R, R3 = 4R, R4 3R. Determine the voltages across each resistor. R, = 2R %3D R, = R R, = 3R R, = 4R V V = ww

In the circuit on the figure below, R1 = 4.5 Ω, R2 = 7.3 Ω, R3 = 3.2 Ω, R4 = 9.6 Ω, R5 = 5.8 Ω and V1 = 10.4 V. If current through point A is 7.0 A and through R4 is 2.6 A, what is the magnitude of potential due to battery V2?

The Q vs t graph shown below is for the capacitor of an RC circuit. Q (C) 8 6. 4. 2. O 6. t(s) 10 20 30 40 50 60 70 80 90 100 4. Second graph The Q vs t graph shown below is for the capacitor of an RC circuit. Q (C) 8 2 2 3 4 Determine the time constant of the RC circuit. t(s) T= If C = 4 F, determine R. R = Ω In this case, was the capacitor charging or discharging? --Select- Determine the time constant of the RC circuit. T= If R = 102, determine C. C = In this case, was the capacitor charging or discharging? -Select- + #

The circuit of the figure shows a capacitor, two ideal batteries, two resistors, and a switch S. Initially S has been open for a long time. If it is then closed for a long time, what is the change in the charge on the capacitor? Assume C = 41 μF, 81 = 4.1 V, 82 = 5.3 V, R₁ = 0.520, and R₂ = 0.45 0. Number ap Units R₁ C R₂ www

The switch is flipped over to position b and the circuit is allowed to reach electrostatic equilibrium.  What is the measured voltage across C2 to 3 significant digits?

A Wheatstone bridge circuit is shown below. In the circuit, Vo = 10.0 V. R₁ R2= 200.092, R3 = 400.0 Q and R4=450.00. The reading of the voltmeter V is: R₁ R₂ V R4 -R3 Vo