Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 35, Problem 5PLA
50639-35-5PLA AID: 1825 | 11/04/2020
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Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?
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A copper transmission cable (p = 1.72 × 10¬° Qm) 250 km long and 20 cm in
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(b) How much electrical energy is dissipated as thermal energy every day? (MJ)
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- If an electric current of 8A is split into three branches, forming a parallel combination, and the lengths of the wires in these branches are in the ratio 3:4:5, while their diameters are in the ratio 2:3:4, then what is the current flowing through first branch? Assume that all the wires are made of the same material. A) 448 A OB) 0.60 A OC) 1.54 A OD) 2.50 A OE) 7.90 A A erabakarrow_forward(a) How much current flows through the E2 = 18 V battery when the switch is closed? (b) How much current flows through the E1 = 15 V battery when the switch is closed? (c) How much current flows through the E2 = 18 V battery when the switch is open? (d) How much current flows through the 1 = 15 V battery when the switch is open?arrow_forwardIf a current of one- or two-tenths of an ampere were to flow into one of your hands and out the other, you would probably be electrocuted. But if the same current were to flow into your hand and out the elbow above the same hand, you would survive even though the current might be large enough to burn your flesh. Explain.arrow_forward
- A hollow cylinder is shown in this figure. When the potential difference (AV = 12 V) is applied between the inner (a) and outer (b) surfaces, find the electric current (I), if a 1 cm, b = 2 cm, L= 1 m, Pcopper = 1.7x 10 Q. m, and 7 = 3.14. A) 3.86 nA B) 4.98 nA C) 5.75 nA D) 6.42 nA E) 8.12 nAarrow_forwardIf galvanometer is shunted by (1/n)sh of its value, then fraction of total current passing through the galvanometer is 1/n 1/(1+n) (a) (c) (b) n (d) n-1arrow_forwardThe electric field inside a solid conductor in which there is no current is zero. Why?arrow_forward
- What is the direction of the force on a wire carrying a current due east in a location where the Earth’s field is due north? Both are parallel to the ground. (b) Calculate the force per meter if the wire carries 20.0 A and the field strength is 3.00 X 10-5 T . (c) What diameter copper wire would have its weight supported by this force? (d) Calculate the resistance per meter and thevoltage per meter needed.arrow_forward(5) Current is flowing through a cylindrical copper wire with radius 6.33mm and length 92.1cm. This wire is hooked up to two capacitors in series C1 = 9.42,1F and C2 = 8.11µF. The capacitors both have cross sectional areas of A = 179cm2. (a) At a given moment in time, the current is I = 77.97A and the drift velocity of the electrons is va = 45.6µm/s. What is the number density of electrons in this wire? (b) At a given moment in time, the charge on capacitor 2 is 62.6uC. What is the total change in potential across both capacitors combined? (c) At the moment described in part (b), what is the energy stored in capacitor 2? (d) At the moment described in part (b), what is the energy density of the electric field in capacitor 2? %3Darrow_forwardA hollow cylinder is shown in this figure. When the potential difference (AV = 12 V) is applied between the inner (a) and outer (b) surfaces, find the electric current (I), if a =1 cm, b 2 cm, L = 1 m, Pcopper = 1.7x 10-8Q. m, and 7 = 3. 14. %3D A) 3.86 nA B) 4.98 nA C) 5.75 nA D) 6.42 nA E) 8.12 nA Lütfen birini seçin: O A O B O D O Earrow_forward
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