(II) Electrocardiographs are often connected as shown inFig. 19–68. The lead wires to the legs are said to be capac-itively coupled. A time constant of 3.0 s is typical andallows rapid changes in potential to be recorded accurately.If C = 3.0 µF, what value must R have? [Hint: Considereach leg as a separate circuit.]- To left-legCelectrodeRRecorder -To right-legelectrode(ground)RCGURE 19-68·To arm electrodeoblem 53.Amplifier

Given: The time constant is 3.0 s. The capacitance is 3.0 μF.

Answered: (II) Electrocardiographs are often…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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14. [- A 200-volt electromotive force is applied to an RC-series circuit in which the resistance is 1000 ohms and the capacitance is 5 x 10-6 farad. Find the charge q(t) on the capacitor if i(0) = 0.2. q(t) = Determine the charge at t = 0.006 s. (Round your answer to five decimal places.) coulombs Determine the current at t = 0.006 s. (Round your answer to five decimal places.) amps Determine the charge as t→∞o.
(2) Analyze the circuit below: 2.7µF 2.7µF 12V- 100µF: 10µF Figure 2: This circuit runs EVE What is the current flowing through one of the 2.7µF capacitors when the circuit is first hooked up? Assume the capacitors are completely uncharged?
(LEGIBLY PLS) In the given circuit, find (a) the current through the 8.0ohm resistor and (b) the total rate ofdissipation of electrical energy in the 8-ohm resistor and in the internal resistance of the batteries. (c) What is the rate of production of electrical energy and (d) the rate of consumption of electrical energy?
[21]
29. (II) For the circuit shown in Fig. 26-53, find the poten- tial difference between points a and b. Each resistor has R=180 2 and each battery is 1.5 V. FIGURE 26-53 Problem 29. 1.5 V R b R ww R a мину R 1.5 V I b F
-- In electricity laboratory, we use some instruments such as ammeter and voltmeter to achieve an electric circuit, during one of the experiment the ammeter was reads 50 mA on its 125 mA range while the voltmeter reads 40 V on its 50 V range. The two instruments are guaranteed to be accurate within + 2% at full scale deflection. Determine the limiting error of the power calculated?
(II) Design a “voltage divider” (see Example 19–3) thatwould provide one-fifth (0.20) of the battery voltage across R2Fig. 19–6. What is the ratio R1/R2
3. (i) Three identical capacitors are connected in delta with 400 V. If the line current is 12 A determine the capacitance of each of the capacitors. If the 0 = 60° then calculate the power dissipation in kW when it connected in STAR
6. (II) A hair dryer draws 7.5 A when plugged into a 120-V line. (a) What is its resistance? (b) How much charge passes through it in 15 min? (Assume direct current.)
(b) A circuit is shown in Figure 1. Given that the current, I = 0.500 A and resistance, R = 12.02. E + R 2R www 2R Figure 1 (i) Determine the current in the battery. (ii) Determine ε. [3 Marks] A [3 Marks] 24V
Moving to another question will save this response. Quèstion 19 An induced emf appears in any coil in which the current is constant. O True False A Moving to another question will save this response.
(III) (a) Determine the currents I₁, 12, and I3 in Fig. 19–61. Assume the internal resistance of each battery is r = 1.0. (b) What is the terminal voltage of the 6.0-V battery? r WITH 12.0 V 22 Ω 12 Ω 28 Ω FIGURE 19-61 Problems 34 and 35. 12.0 V 112 r 16 Ω |_ 6.0 V 13

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