Wire C and wire D are made from different materials and have length Lc Lo = 2.3 m. The resistivity and diameter of wire C are 4.4 x 10-6 2.m and 0.125 cm, and those of wire D are 3.6 × 10-6 2.m and 0.83 mm. The wires are joined as shown in the figure and a current of 2.7 A is set up in them. What is the electric potential difference between (a) points 2 and 3? What is the rate at which energy is dissipated between (b) points 1 and 2? C D 1

Wire C and wire D are made from different materials and have length Lc Lo = 2.3 m. The resistivity and diameter of wire C are 4.4 x 10-6 2.m and 0.125 cm, and those of wire D are 3.6 × 10-6 2.m and 0.83 mm. The wires are joined as shown in the figure and a current of 2.7 A is set up in them. What is the electric potential difference between (a) points 2 and 3? What is the rate at which energy is dissipated between (b) points 1 and 2? C D 1

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 9P

See similar textbooks

Similar questions

A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire?
An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the absolute value of the charge density in the wire? (b) What is the drift velocity of the electrons? (c) What would be the drift velocity if the same gauge copper were used instead of aluminum? The density of copper is 8.96 g/cm3 and thedensity of aluminum is 2.70 g/cm3. The molar mass ofaluminum is 26.98 g/mol and the molar mass of copper is 63.5 g/mol. Assume each atom of metal contributes one free electron.
Wire C and wire D are made from different materials and have length LC = LD = 3.6 m. The resistivity and diameter of wire C are 4.8 × 10-6 Ω·m and 1.06 mm, and those of wire D are 4.0 × 10-6 Ω·m and 0.73 mm. The wires are joined as shown in the figure and a current of 4.3 A is set up in them. What is the electric potential difference between (a) points 1 and 2 and (b) points 2 and 3?
Wire C and wire D are made from different materials and have length LC = LD = 3.1 m. The resistivity and diameter of wire C are 3.3 × 10-6 Ω·m and 1.03 mm, and those of wire D are 1.2 × 10-6 Ω·m and 0.72 mm. The wires are joined as shown in the figure and a current of 2.6 A is set up in them. What is the electric potential difference between (a) points 1 and 2 and (b) points 2 and 3? What is the rate at which energy is dissipated between (c) points 1 and 2 and (d) points 2 and 3?
A lightning rod on top of a building consists of an iron spike 1.5 m long with a circular crosssection of diameter 1.5 cm. During a lightning strike, the rod carries a current of 1000 A. What is the potential difference across the rod when this current flows? The resistivity of iron is 1.0 x 10-7 Ωm.
A 580 mm long tungsten wire, with a 0.048 mm diameter circular cross section, is wrapped around in the shape of a coil and used as a filament in an incandescent light bulb. When the light bulb is connected to a battery, a current of 0.536 A is measured through the filament. Tungsten has a resistivity of 4.9 x 10-8 Ohms x m. How many electrons pass through this filament in 5 seconds? What is the resistance of this filament? What is the voltage of the battery that would produce this current in the filament?
A copper wire is r = 2.19 cm in radius and 2.6 m in length, has a resistivity of 1.72x10^-8 Ω m, and carries a current of 3.23 A. The wire has a charge carrier density of 8.49x10^28 electrons/m3. What is the electric potential difference, V in volts, across the wire? Note: Express your answer to three significant figures. Use scientific notation
An extension cord has a resistivity of p = 7.5 x 10-8 Ω.m. The cord is made from copper wire with a diameter D = 0.45 cm and it is L = 9.9 m long. (a) What is the resistance in ohms? R = (b) If a current of I= 2.95 A passes through the wire what voltage is the cord connected to, in volts? V=
1) A 52.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 ✕ 10−8 Ω · m, and the density is 7.09 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 Ω. (a) What length of wire is required? _____ m (b) What must be the diameter of the wire? _______ mm 2) A battery having an emf of 9.23 V delivers 116 mA when connected to a 62.5 Ω load. Determine the internal resistance of the battery. ______ Ω
When a potential difference of 12 V is applied to a wire 8.5 m long and 0.41 mm in diameter the result is an electric current of 2.8 A. What is the resistivity of the wire? Group of answer choices 1.36 x 10^-8 Ω m 1.91 x 10^-8 Ω 1.11 x 10^-8 Ω m 6.66 x 10^-8 Ω m
A 2.7-mm-diameter wire carries a 17 A current when the electric field is 9.9×10−2 V/m What is the wire's resistivity?
a) A1500W heater is connected to a 120V line. How many heat energy does it produce in 2.0hours? b) The resistivity of gold is 2.44x10-8ohm.m at room temperature. A gold wire that is 1.8mm in diameter and 11cm long carries a current of 170mA. How much power is dissipated in the wire?