In the figure 1 = 4.38 V, 2 = 1.17 V, R₁ = 3.970, R₂ = 1.902, R3 = 4.782, and both batteries are ideal. What is the rate at which energy is dissipated in (a) R₁, (b) R₂, and (c) R3? What is the power of (d) battery 1 and (e) battery 2? ww R₁ www R₂ -f8₂ Rg 8₂f- (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units (e) Number i Units

In the figure 1 = 4.38 V, 2 = 1.17 V, R₁ = 3.970, R₂ = 1.902, R3 = 4.782, and both batteries are ideal. What is the rate at which energy is dissipated in (a) R₁, (b) R₂, and (c) R3? What is the power of (d) battery 1 and (e) battery 2? ww R₁ www R₂ -f8₂ Rg 8₂f- (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units (e) Number i Units

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 12CQ: Semi-truck or trucks use four large 12-V batteries. The starter systemrequires 24 V, while normal...

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Semi-truck or trucks use four large 12-V batteries. The starter systemrequires 24 V, while normal operation of the truck’s other electrical components utilizes 12 V. How could the four batteries be connected to produce 24 V? To produce 12 V? Why is 24 V better than 12 V for starting the truck’s engine (a very heavy load)?
The temperature near the center of the Sun is thought to be 15 million degrees Celsius ( 1.5107oC ) (or kelvin). Through what voltage must a singly charged ion be accelerated to have the same energy as the average kinetic energy of ions at this temperature?
The student engineer of a campus radio station wishes to verify the effectiveness of the lightning rod on the antenna mast (Fig. P21.71). The unknown resistance Rx is between points C and E. Point E is a true ground, but it is inaccessible for direct measurement because this stratum is several meters below the Earths surface. Two identical rods are driven into the ground at A and B, introducing an unknown resistance Ry. The procedure is as follows. Measure resistance R1 between points A and B, then connect A and B with a heavy conducting wire and measure resistance R2 between points A and C. (a) Derive an equation for Rx in terms of the observable resistances, R1 and R2. (b) A satisfactory ground resistance would be Rx 2.00 . Is the grounding of the station adequate if measurements give R1 = 13.0 and R2 = 6.00 ? Explain. Figure P21.71
Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a voltage of 1.00102 MV, and a length of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water?
In the figure ε1 = 3.76 V, ε2 = 1.05 V, R1 = 4.69 Ω, R2 = 2.72 Ω, R3 = 4.95 Ω, and both batteries are ideal. What is the rate at which energy is dissipated in (a) R1, (b) R2, and (c) R3? What is the power of (d) battery 1 and (e) battery 2?
In the figure ε1 = 3.24 V, ε2 = 0.829 V, R1 = 4.71 Ω, R2 = 1.75 Ω, R3 = 3.59 Ω, and both batteries are ideal. What is the rate at which energy is dissipated in (e) battery 2?
In the figure ε1 = 2.45 V, ε2 = 0.803 V, R1 = 6.98 Ω, R2 = 1.53 Ω, R3 = 5.09 Ω, and both batteries are ideal. (a) What is the rate at which energy is dissipated in R1, R2, and R3? (b) What is the power of battery 1 and battery 2?
In the figure ε1 = 3.24 V, ε2 = 0.829 V, R1 = 4.71 Ω, R2 = 1.75 Ω, R3 = 3.59 Ω, and both batteries are ideal. What is the power of (d) battery 1 and (e) battery 2?
An electronic flashgun has a capacitor with capacitance C that is charged to a voltage V. Answer the questions below Given that C=C= 1441 μF and V=V= 317 V. Determine: How much energy is stored by the capacitor? The charge QQ on the capacitor? When the photographer takes a picture, the flash fires for t= 0.0032 ss. What is the average current through the flash tube?
A 3.00 M resistor and a 1.00 mF capacitor are connected in series with an ideal battery of emf e= 4.00 V.At 1.00 s after the connection is made, what is the rate at which (a) the charge of the capacitor is increasing, (b) energy is being stored in the capacitor, (c) thermal energy is appearing in the resistor, and (d) energy is being delivered by the battery?
The temperature near the center of the Sun is thought to be 15 million degrees Celsius (1.5 × 107 °C) (or kelvin). Through what voltage must a singly charged ion be accelerated to have the same energy as the average kinetic energy of ions at this temperature?
1. A 500. −? resistor, an uncharged 2.00 uF capacitor, and a 10.0 − ? emf source are connected in series. How much charge does the capacitor store after one time constant?a) Zerob) 1.26 × 10−5Cc) 1.73 × 10−5Cd) 2.00 × 10−5C2. A current of 50 mA is fed to a 100 ? resistor. What are the potential difference and power one would expect to measure?a) 5 mV and 5 mWb) 5,000 V and 250,000 Wc) 0.25 V and 5 Wd) 5 V and 0.25 W