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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:Two Iron wires are found in a closet. The first has a resistance of R₁. The second is 9 times longer than the first and the cross-sectional area of the second wire is 7 times larger
than the first. Determine the resistance of the second wire.
R₂= R₁x
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- A cylindrical aluminum pipe of length 2.16 m has an inner radius of 2.03 × 103 m and an outer radius of 3.44 ×103 m. The interior of the pipe is completely filled with copper. What is the resistance of this unit? (Hint: Imagine that the pipe is connected between the terminals of a battery and decide whether the aluminum and copper parts of the pipe are in series or in parallel.) Number i Unitsarrow_forwardConsider the following circuit diagram. The potential difference across the battery is 40.0 volts, and it supplies a current of 5.00 amperes to the circuit. There is a current of of 2.70 amperes flowing through R1. Resistor R2 has a resistance of 5.50 ohms. What is the resistance of R3? Answer in ohms to two decimal places, but do not include units in your answer.arrow_forwardF₁ = L1, B₂ чт вът Різі чом =1032 V R -Gv 100 qüdrh I 1 R2 R23 2. Four resistors and a 6.0-V battery are arranged as shown in the circuit diagram. Find the equivalent resistance of the circuit b. Find the current through the 10-Ohm resistor a. sonsufit c. Find the power delivered to the 10-Ohm resistor R₁-4092 -18V -18V 13 C+ D B=6V 6VI Azov I=I1 + 0.64 AQUOS to 218-12 = 30 I H = -1 R4-2002 14. 0.64 1₂V R₂-3002 -IA F 12V E R3=1092 holong s vivang to 6 DS sailwaqogani THOS T20 3. A horizontal wire of length 6.0m carries a current of 6.0A and is oriented so that Forth's magnetic field is due north at thisarrow_forward
- The resistance R of a conductor depends on its shape and physical dimensions and a property of the material called the resistivity p What does the resistivity of a material depend upon? Assuming that the resistivity of copper is a quarter of that of aluminium and that the density of copper is three times that of aluminimium, find the ratio of the masses of copper and aluminium wires with the same length and the same resistance but with different cross - sectional areas .arrow_forwardIn 2.9 s, 1.9 × 10¹9 electrons pass a certain point in a wire. What is the current I in the wire? 1= iarrow_forwardIf the battery in the circuit below is 7.16V, resistor R1=331.15ΩΩ, and resistor R2=51.49ΩΩ, what is the magnitude of the current flowing through the circuit? Please give your answer in units of milli-Amps (mA).arrow_forward
- Two wires have the same length and the same resistance but are made up of different materials. The resistivities of these materials are 1.38 Qm and 3.07 Qm. Obtain the ratio of the smaller cross-sectional area to the greater cross-sectional area. Number i Unitsarrow_forwardWires 1 and 2 are made of the same material. Wire 2 has 1/3 the length and 1/3 the diameter of wire 1. What are the ratios R₂/R₁ of the resistances of the wires? A) R₂/R₁ = 9 B R₂/R₁ = 3 C) R₂/R₁ = 1/3 D R₂/R₁ = 1/9 E None of the other answers is correctarrow_forward
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