Don't use gpt Current Attempt in ProgressThe figure shows a resistor of resistance R = 6.34 Q connected to an ideal battery of emf = 15.2 V by means of two copper wires.Each wire has length 22.1 cm and radius 1.40 mm. In dealing with such circuits in this chapter, we generally neglect the potentialdifferences along the wires and the transfer of energy to thermal energy in them. Check the validity of this neglect for the circuit of thefigure below. What is the potential difference across (a) the resistor and (b) each of the two sections of wire? At what rate is energy lostto thermal energy in (c) the resistor and (d) each section of wire?(a) Number iUnits(b) NumberiUnitsE(c) Number iUnits(d) Number iUnitsWire 1RWire 2>

Answered: Image /qna-images/answer/9a7341b9-9258-49fc-b6bf-ad81e2405c3e.jpg

Answered: Current Attempt in Progress The figure…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 69AP: Consider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r =...

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Consider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r = 1,00 . (a) Find the equivalent resistance of the circuit and the current out of the battery. (b) Find the current through each resistor, (c) Find die potential drop across each resistor, (d) Find the power dissipated by each resistor, (e) Find the total power supplied by the batteries.
Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as accurate as P=P0(1 + a?T) which gives the temperature variation of resistivity P.
Review. When a straight wire is warmed, its resistance is given by R = R0,[1 + a(T T0)] according to Equation 27.20, where a is the temperature coefficient of resistivity. This expression needs to be modified if we include the change in dimensions of the wire due to thermal expansion. For a copper wire of radius 0.100 0 mm and length 2.000 m, find its resistance at 100.0C, including the effects of both thermal expansion and temperature variation of resistivity. Assume the coefficients are known to four significant figures.
An ECG monitor must have an KC time constant lessthan 1.00102s to be able to measure variations involtage oversmall time intervals, (a) If the resistance of the circuit (duemostly to that of the patient's chest) is 1.00kTwhat is the maximum capacitance of the circuit?(b) Would It be difficult in practice to limit the capacitance to less than the value found in (a)?
A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?
Consider a resistor made from a hollow cylinder of carbon as shown below. The inner radius of the cylinder is Ri= 0.20 mm and the outer radius is R0 = 0.30 mm. The length of the resistor is L = 0.90 mm. The resistivity of the carbon is =3.5105 m. (a) Prove that theresistance perpendicular from the axis is R=2L1n(R0Ri) . (b) What is the resistance?
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 potential difference across the filament of a light-bulb is maintained at a constant value while equilibrium temperature is being reached. The steady-state current in the bulb is only one-tenth of the current drawn by the bulb when it is first turned on. If the temperature coefficient of resistivity for the bulb at 20.0C is 0.004 50 (C)-1 and the resistance increases linearly with increasing temperature, what is the final operating temperature of the filament?
A child's electronic toy is supplied by three 1.58-V alkaline cells having internal resistances of 0.0200 inseries with a 1.53-V carbon-zinc dry cell having a 0.100- internal resistance. The load resistance is 10.0 . (a) Draw a circuit diagram of the toy and itsbatteries, (b) What current flows? (c) How much power is supplied to the load? (d) What is the internal resistance of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?
Consider a power plant is located 60 km away from a residential area uses Q-gauge (A=42.40mm2) wire ofcopper to transmit power at a current of I = 100.00 A.How much more power is dissipated in the copper wires than it would be in superconducting wires?
cs-IIB Physics-IIB 500 75.J In a potentiometer experiment, the balancing nown length with a cell is 560cm. When an external fo aps of resistance of 10 ohms is connected in parallel to the cell the balancing length changes by 60 cm. The internal resistance of the cell in ohms is: When 2,the 1) 3.6 2) 2.4 1.2 4) 0.6 (76) The resistivity of a potentiometer wire is, if the area of cross section of the wire is 4cm? the current x' is flowing in the circuit is 1A,the potential gradient is 7.5 v/m Own ght t is 3 × 103 2-m 2) 2 x 1062-m 3) 4 x 1022-m 4) 5 x 1042-m A potentiomete wire of 10m length and 20 Ohm resistance is connected in series with a resistance R ohms and a battery of emf 2V, negligible internal resistance. Potential gradient on the wire is 0.16 millivolt/centimetre then R is---ohms A 230 77. ea 1) 50 2) 60 4) 46.6 gREDMI NOTÉ GIPRO meter has a wire of 100cm length MI DUAL CAMERA and its resistänce is 10 Ohms. It i 2021/11/17;22effes nected in
My homework asks : rest is given in the question. Can you help with my homework? In the circuit in the figure, two identical parallel metallic plates, with identical etallic arcIt has been connected to 100 V battery. Switch on position, plates unloaded,the gap between them is d = 4 mm and the surface of one plate is 1778 m2.When the switch is turned off, the distance between the plates is reduced by 0.5 times. EachWhat is the spring constant of a spring in units of Newton / meter? Eo = 9 x 10-12 C2 / Nm2

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