The filament of a certain light bulb is made of tungsten and has a length of 0.48 m and a circular cross-section with a diameter of 0.062 mm.a. Calculate the resistance of the filament at room temperature.b. A4.0 V voltage applied to the filament results in a 0.078 A current. Determine the temperature of the filament under these conditions.I need to show all work please 2. The filament of a certain light bulb is made oftungsten and has a length of 0.48 m and a circularcross-section with a diameter of 0.062 mm.a. Calculate the resistance of the filament atroom temperature.b. A4.0 V voltage applied to the filamentresults in a 0.078 A current. Determine thetemperature of the filament under theseconditions.

Write the provided data.Here, d is the diameter, L is the length, is the resistivity of tungsten,…

2. The filament of a certain light bulb is made of tungsten and has a length of 0.48 m and a circular cross-section with a diameter of 0.062 mm. a. Calculate the resistance of the filament at room temperature. b. A 4.0 V voltage applied to the filament results in a 0.078 A current. Determine the temperature of the filament under these conditions.

2. The filament of a certain light bulb is made of tungsten and has a length of 0.48 m and a circular cross-section with a diameter of 0.062 mm. a. Calculate the resistance of the filament at room temperature. b. A 4.0 V voltage applied to the filament results in a 0.078 A current. Determine the temperature of the filament under these conditions.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 70PE: Unreasonable Results (a) What current is needed to transmit 1.00 102 MW of power at 10.0kV? (b)...

See similar textbooks

Similar questions

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?
1. An electric flat iron draws a current of 15 A when connected to a 110 V line. a. What is the resistance of the flat iron? b. What is the resistivity of the heating element if it is a wire that is 2.5 cm long with cross-sectional area of 2.0 x 104 m??
Choose the CORRECT answer for each item. 1.There are two wires, one is made of copper and the other one is silver. These two wires of the same length are made, one from each of the materials. Is it possible for each wire to have the same resistance? Yes, because the two wires have the same length. Yes, because copper and silver have the different resistivity. No, because the two wires have the same length. No, because copper and silver have the different resistivity. a. b. C. d. 2.A flashlight requires two 1.5-volt batteries for it to light. The current that flows through it is equivalent to 0.15 A. In an hour of operation, how much charge flows in the system? a. 520 C b. 540 C c. 560 C d. 580 C 3.A hair blower contains a heating element which has a resistance of 57 Q. This heating element is energized by a 220-V outlet. What is the current that flows in the heating element? a. 3.9 A b. 4.9 A c. 5.9 A d. 6.9 A
A piece of wire of length 31.5 cm and cross-sectional area 227.4 cm² is made into a resistor of resistance 713.8 ohm. What is the resistivity of the material used to create the resistor? O a. 5113020.78 ohm-metre O b. 10.04 ohm-metre O c. 5152.96 ohm-metre d. 98.88 ohm-metre Oe. 51.53 ohm-metre Of. 515295.62 ohm-metre O g. 0.10 ohm-metre Oh. 0.99 ohm-metre
A1. A hair blower contains a heating element which has a resistance of 57 Ω. This heating element is energized by a 220-V outlet. What is the current that flows in the heating element?a. 3.9 A b. 4.9 A c. 5.9 A d. 6.9 A A2. What will happen to the resistance of a material if the resistivity changed due to the increase of temperature?a. Increases b. Decreases c. remains the same d. zero
3. What will be the resistance of a copper wire that has a radius of 2 cm and length of 100 cm? The resistivity of the copper wire is 1.7x10^(-8) ohm.meter? a. 400 b. 500 c. 600 d. NONE OF THE CHOICES 4. Calculate the temperature of a wire if its resistance is increase to 200 ohm from 150 ohm at 25 degree Celsius. The temperature coefficient of the wire is 0.0225 per degree Celsius. a. 46.28 b. 26.48 c. 84.26 d. NONE OF THE CHOICES 5. Find the current rating of a defibrillator that can pass electric charge at 200 mA at 0.127 seconds. Calculate also the number of electrons on that particular time. a. 2.57 A and 125 electron b. 5.57 A and 1250 electron c. 7.57 A and 12500 electron d. NONE OF THE CHOICES Please don't write in a paper. I can't understand handwritten well.
3. Use the table of values in SSLM week6, p3. Calculate the resistance of copper wire, 100m length, 1.0mm diameter a. circular cross section (in Ohms). B. Having same resistance in (a), what would be the length of aluminum made, 1.0mm diameter-circular cross section (in m)? b. C. If the copper wire in (a) was replaced by steel material, having the samne length of 100m, what is diameter of a circular cross section wire (in m)?
a. What should be the value of X such that the total resistance of the circuit is 22 ohms? b. What is the voltage across R4? . How much current is flowing through R3?
p versus T. The figure shows the behavior of the resistivity p of a material Z as a function of temperature T. If a constant electric field is maintained inside it, which of the following statements is/are TRUE P. about the metal? I. The current density in metal Z increases with increasing tempera- -T To ture. II. Its resistivity at T = T, is Po. III. Metal Z becomes a better conductor with increasing temperature. A. I only В. П only C. I and II D. II and III
1. Silver is composed of 5.8 x 1028 free electrons per cubic meter. If a silver wire with a diameter of 1.8 mm can allow charges of 360 C to flow in 1 hour,a. What is the current in the conducting wire?b. What is the magnitude of the drift velocity of the electrons in the conducting wire?
You are measuring the current of a certain component in a circuit board and it reads negative (-) 8.77MA. What does it means? a. There is an error on the digital multimeter. b. The numerical value of the current is negative. c. There is an error in the circuit. It is short circuit. d. It indicated an inverse direction. You have switched the positive and negative terminal of the DMM.
A current of 4.5mA flow through a copper wire in area of 20mm2. The current density is O a. 225000A/m O b.225A/m2 444A/m2 C. O d. 2.25 x10-4 A/m² QUESTION 4 Three resistors of 202, 502, ad 1002 can be connected in series or in parallel. What minimum and maximum resistance can you obtain from these? O a. Rmin=1502; Rmax = 0.082 O b. Rmin=1702; Rmax = 12.52 c. Rmax=170Q; Rmin= 12.5Q O d. Rmin=0.082; Rmax = 12.5Q