1. Consider the two-loop circuit sketched below. Find the current passing through each battery, and calculate the rate at which energy is delivered to the circuit by the two batteries. 552
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- *63. What is the total amount of current passing through the three resistors (4Ω, 5Ω, and 6Ω) connected in a series circuit and connected to a 110V battery? Group of answer choices 8.35 A 7.33 A 13.0 A 4.55 A10. In the circuit shown, if R₁ = 1.00, R₂ = 20 02, and R3 = 300 0, what is the current, I, flowing back to the battery? V= 12 V R₁ WWW ~ WWW- R32. Three resistors, each with resistance R1, are in series in a circuit. They are replaced by one equivalent resistor, R. Comparing this resistor to the first resistor of the initial circuit, which of the following is true? A) The current through R equals the current through R1. B) The voltage across R equals the voltage across R1. C) The power given off by R equals the power given off by R1. D) R is less than R1. E) None of the above
- 3. A coffee-maker (142) and a toaster (192) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances when both are turned on? а. 1.2х105w b. 2.2x105W с. 3.2х105W d. 4.2x105W10. a circuit consisting of a battery with an emt of 12V, a vesistor with a resistance of 1.2h2, a capacitor with a capacitance of 0.05F, and another capacitor with a capacitance of 0.2F are all connected in series with a switch. Initially, both capacitors are empty. When the switch is closed, a) now long will it take each capacitor to reach a charge of V. 2880? b) at that time, what is the current through the resistor? c) at that time, what are the potentials across the resistor and each capacitor?6. A series circuit is comprised of 2 resistors R1 = 500 ohms and R2 = 1000 ohms and a capacitor of C = 470mF. The combination is suddenly connected across a 50V dc supply battery. Determine the time constant and the time when the capacitor charge reaches 20Coulombs.
- 9. The following question is about power dissipation in a resistor, which we didnâÂÂt really cover in class. This topic is fairly easy though. In a circuit, all the power delivered by the battery must be dissipated by the elements to the circuit. This is simply a statement of the conservation of energy. How much energy dis- sipated depends on the resistance of the element and the voltage across the resistor, or the current through it. The relevant equa- tions for the problems are as follows. For a circuit element, the power dissipated (or generated) is P = IV, where V and I are the voltage across and current through a circuit element. We know that a resistor obeys OhmâÂÂs Law V = IR, which means that for a resistor, the power dissipated is P = 1²R=V²/R. Consider the following two circuits with identical batteries and re- sistors. А В C R R R RS R If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit B? If the power…Consider a circuit consisting of a battery and two bulbs. Explain why the following two statements are direct consequences of the preceding definitions. A. When two bulbs are connected in series, the same current that passes through one bulb must also pass through the other. B. When two bulbs are connected in parallel, current that passes through one bulb does not pass through the other.2. An uncharged capacitor is connected to a battery of potential 10 V through a resistor of resistance 10 kn. If the capacitance of the capacitor is 7µF, how long will it take to charge the capacitor to a charge of 50 µC? What is the time constant of the RC circuit?
- The time constant in an RC circuit is the time it takes a. so that the current drops to zero. b. so that the current reaches its maximum value c. so that the capacitor is fully charged. d. in which the current decreases to 37% of its initial value.Why is it dangerous to use an electric shaver while taking a bath? and What do you mean by short circuit? Explain.4.) A battery has an EMF of 24.0 V and an internal resistance of ‘r’. Its terminals are connected to a load resistance of 5.25 ohms. a. Find r and current in the circuit if the terminal volatge of the battery is 22.5 V. b. Calculate the power delivered to the load resistor, the power delivered to the internal resistance, and the power delivered by the battery.