In the figure the resistances are R₁ = 1.40 and R₂ = 2.8 02, and the ideal batteries have emfs 8 = 1.8 V, and 82 83 = 5.2 V. What are the (a) size and (b) direction (up or down) of the current in battery 1, the (c) size and (d) direction of the current in battery 2, and the (e) size and (f) direction of the current in battery 3? (g) What is the potential difference V₁-V₂? R₁ ww 18, R₁ R₂ R₁ R₁ 4
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- A 310-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,030 A. If the conductor is copper with a free charge density of 8.50 x 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 x 107 for the number of seconds in a year.) yrAn uncharged capacitor is connected in series with a battery and a resistor. In terms of the time constant τ, how long does it take the capacitor to charge to 1/3 its max charge? 0.205τ 1.10τ 3τ None of the above 0.405τA 340-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,230 A. If the conductor is copper with a free charge density of 8.5 x 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 × 107 for the number of seconds in a year.) yr
- Please explain why.If the battery in the circuit below is 3.53V, resistor R1=69.44ΩΩ, and resistor R2=61.16ΩΩ, what is the magnitude of the potential drop across resistor R2? Please give your answer in units of Volts (V).€= 30V ( 150 με Ο 15 με Ο 25 με 075 με Ο 45 με Ο 300 με α Ο 30 με ( 10 με b 15 MF 3 µF 7.5 με 4 με 12 μF Consider the circuit shown in the figure. What is the charge for the 4uF capacitor? 6 µF
- If the battery in the circuit below is 4.92V, resistor R1=70.84Ω, and resistor R2=69.2Ω, what is the magnitude of the potential drop across resistor R2? Please give your answer in units of Volts (V).A 320-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,070 A. If the conductor is copper with a free charge density of 8.50 x 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 x 107 for the number of seconds in a year.) yrThe circuit in the figure below contains two resistors, R₁ = 1.7 k and R₂ = 2.7 km, and two capacitors, C₁ = 2.3 μF and C₂ = 3.1 μF, connected to a battery with emf E = 100 V. If there are no charges on the capacitors before switch S is closed, determine the charges 9₁ and 92 on capacitors C₁ and C₂, respectively, as functions of time, after the switch is closed. Hint: First reconstruct the circuit so that it becomes a simple RC circuit containing a single resistor and single capacitor in series, connected to the battery, and then determine the total charged a stored in the circuit. (Use the given values for R₁, R₂, C₁, C₂, and E. Use the following as necessary: t. Do not include any units in your response.) 91 = 92= μC μc R₁ www R₂ S + d E C₂
- In the figure R₁ = 110 Q, R₂ = 50 , and the ideal batteries have emfs ₁ = 5.0 V, 82 = 4.0 V, and 3 = 5.0 V. Find (a) the current in R₁, (b) the current in R₂, and (c) the potential difference between points a and b. R₁ =100 E₁ cony/ R₂Chapter 27, Problem 039 GO In the figure two batteries of emf E = 11.0 V and internal resistance r = 0.306 are connected in parallel across a resistance R. (a) For what value of R is the dissipation rate in the resistor a maximum? (b) What is that maximum? HF 8 FWW 8 R-5.00 Ω , R In the figure below, & = 3.00 V, & = 1.00 V, R1 R3 = 2.00 2, and both batteries are ideal. What is the rate at which energy is dissipated = 4.00 N, in (a) R1? (b) R2? (c) R3? What is the power of (d) battery 1? (e) battery 2? R2 R3 R