EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Chapter 25 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 25.2 - If 1 million electrons per second pass a point in...Ch. 25.2 - Prob. 1BECh. 25.3 - Return to the Chapter-Opening Question, page 651,...Ch. 25.4 - Prob. 1DECh. 25.4 - Prob. 1EECh. 25.4 - Prob. 1FECh. 25.4 - How many 60-W 120-V lightbulbs can operate on a...Ch. 25.6 - Each channel of a stereo receiver is capable of an...Ch. 25 - What quantity is measured by a battery rating...Ch. 25 - When an electric cell is connected to a circuit,...
Ch. 25 - When a flashlight is operated, what is being used...Ch. 25 - One terminal of a car battery is said to be...Ch. 25 - When you turn on a water faucet, the water usually...Ch. 25 - Can a copper wire and an aluminum wire of the same...Ch. 25 - The equation P = V2/R indicates that the power...Ch. 25 - What happens when a lightbulb burns out?Ch. 25 - If the resistance of a small immersion heater (to...Ch. 25 - Prob. 10QCh. 25 - Explain why lightbulbs almost always burn out just...Ch. 25 - Which draws more current, a 100-W lightbulb or a...Ch. 25 - Electric power is transferred over large distances...Ch. 25 - A 15-A fuse blows repeatedly. Why is it dangerous...Ch. 25 - When electric lights are operated on low-frequency...Ch. 25 - Driven by ac power, the same electrons pass back...Ch. 25 - The heating element in a toaster is made of...Ch. 25 - Is current used up in a resistor? Explain.Ch. 25 - Compare the drift velocities and electric currents...Ch. 25 - A voltage V is connected across a wire of length l...Ch. 25 - Why is it more dangerous to turn on an electric...Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - (II) A rectangular solid made of carbon has sides...Ch. 25 - (III) A hollow cylindrical resistor with inner...Ch. 25 - Prob. 63GP
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- (b) If the resistor is made of carbon, what will its resistance be when its temperature is increased by 68.0 C°? (The temperature coefficient of resistivity for carbon is −5.0 10-4 (°C)-1.) Amp=1.33arrow_forward(b) 1. A platinum resistance sensor has a resistance of 100 2 at 0 °C and a temperature coefficient of resistance (oc) of 4 x 10 "C. If the resistance of the sensor is 125 O, find the corresponding temperature of the sensor. ii. A variable dielectric capacitive displacement sensor consists of two square metal plates of side 5 cm, separated by a gap of 1 mm. A sheet of dielectric material 1 mm thick and of the same area as the plates can be slide between them as shown in Figure Q.4b. Given that the dielectric constant of air is 1 and that of the dielectric material is 4, calculate the capacitance of the sensor when the input displacement x-0.0 cm, 2.5 cm and 5,0 cm. Figure Q4barrow_forwardThe circuit shown below can be used to measure the resistance of a platinum resistance thermometer (PRT). AB is a uniform resistance wire of length 1.00 m and C is a sliding contact on this wire. A standard resistor R is included in the circuit. The position of C is adjusted until the voltmeter V reads zero. (ii) The PRT consists of 9.00 m of wire of diameter 8.4 × 10-2 mm. The voltmeter reads 0 V when l1 = 0.422 m. If the standard resistor, R, has a resistance of 220 Ω, what is the resistivity of platinum? Show that you have checked that the value for the resistivity and its unit are sensible.arrow_forward
- (II) Two aluminum wires have the same resistance. If one hastwice the length of the other, what is the ratio of the diameterof the longer wire to the diameter of the shorter wire?arrow_forward(9) THE FOLLOWING QUESTIONS ARE BASED ON THE INFORMATION GIVEN HERE. A rod of semiconducting material of length L = 3 m and cross-sectional area A = 4.5 mm² lies along the x-axis between x = 0 and x = L. The material obeys Ohm's law, and its (1-#) resistivity varies along the rod according to p = po where po = 5 x 10-4 SN · m. The end of the rod at x = 0 is at a potential Vo 10 V greater than the end at x = L. L² A) What is the total resistance, in units of 2, of the rod? Answer: B) What is the current, in units of miliamperes, in the rod? Answer: C) What is the electric potential, in units of Volt, in the rod at x = L/2? Answer: D) What is the electric-field magnitude E, in units of V/m, in the rod at x = L/2? Answer:arrow_forward(1) A silver wire 1.00 mm in diameter transfers a charge of 65.0 C in 1 hr. 15.0 min. Silver contains 5.0 x 1028 electrons per cubic meter. What is the current in the wire? What is the magnitude of the drift velocity of the electrons in the wire?arrow_forward
- (i) A battery has an emf of 3.0 V and an internal resistance of 0.0200 Ω. What is the terminal voltage when the current drawn from the battery is 2.0 A? The terminal voltage is = (ii) If a current of 75 mA exists in a metal wire, how many electrons flow past a given cross section of the wire in 3 min? Number of electrons flow past a given cross section of the wire =arrow_forward6. (a) Charge Q coulombs at time t seconds is given by the differential equation Õp dQ Q RE+ =0, where C is the capaci- dt tance in farads and R the resistance in ohms. Solve the equation for Q given that Q=Qo when t=0. (b) A circuit possesses a resistance of 250 × 10³ 2 and a capacitance of 8.5 x 10–6F, and after 0.32 seconds the charge falls to 8.0C. Determine the initial charge and the charge after 1 second, each correct to 3 significant figures. -tarrow_forward(II) A certain copper wire has a resistance of At 15.0 Ωwhat point along its length must the wire be cut so that the resistance of one piece is 4.0 times the resistance of the other? What is the resistance of each piece?arrow_forward
- (a) To what temperature must you raise a copper wire, originally at 20 °C, to double its resistance, neglecting any changes in dimensions? Use a = 3.9×10 1 -3 O Yes No O T= (b) Does this happen in household wiring under ordinary circumstances?arrow_forward(b) A wire is drawn through a die, stretching it to six times its original length. By what factor does its resistance increase? (05)arrow_forward(II) A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respectively (Fig. 18–35). Determine the resistance for current that passes through the solid in (a) the x direc- tion, (b) the y direction, and (c) the z direction. Assume the resistivity is p = 3.0 × 10-$ :m. 2.0 cm FIGURE 18–35 1.0 cm Problem 19. 4.0 cmarrow_forward
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