A common flashlight bulb is rated at 0.25 A and 2.6 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.1 Ω, what is the temperature of the filament when the bulb is on? The temperature coefficient of resistivity is 5.3 × 10-3 K-1 for the filament material.

Q: A common flashlight bulb is rated at 0.28 A and 2.7 V (the values of the current and voltage under…

A: We know, T=T0+1αRR0-1 where, T0 is the room temperature  α is the coefficient of resistivity R is…

Q: A gold resistance thermometer has a resistance Ro = 70.0Ω at To = 20°C. The temperature coefficient…

A: SOlution: given that  Ro = 70.0Ω To = 20°C Temperature coefficient of resistance is 3.4x10-3°C R…

Q: The resistance of a copper wire at 7⁰C is 50 mΩ. If the temperature coefficient of copper at 0⁰C is…

A:

Q: The resistance of a thin silver wire is 1.0 32 at 0°C. The wire is placed in a liquid bath and its…

A: Resistance is a measure of the opposition to current flow in an electrical circuit. Here,we…

Q: A toaster has a Nichrome (a=4.5×104 °C-) heating element that has a resistance of Ro= 80 2 at a…

A: The relation between the resistance and the temperature is given by, Here, R, Ro, T, To and α…

Q: A coil of wire has a resistance of 55.8Ω at 26 °C and 54.1Ω at 61 °C. What is the temperature…

A: Initial temperature To = 26oC Final temperature T = 61oC Initial resistance Ro = 55.8 ohm Final…

Q: When at 25 degrees Celsius, a certain resistor has a resistance of 220 Ohms. When connected to a…

A:

Q: Calculate the ratio of the resistance of 15.0 m of aluminum wire 2.3 mm in diameter, to 30.0 m of…

A: Given: Length of aluminum wire, La=15 m            Diameter of aluminum wire, d=2.3 mm…

Q: An engineering intern is studying the effect of temperature on the resistance of a current carrying…

A: Consider the first case,  initial temperature, T = 20 oC Final temperature, T1 = 54 oC Change in…

Q: As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. If a…

A: At T=20°, the resistance of the rod is given by R20=ρ20l20A

Q: The length of a 200 m lead wire has a resistance of 1.7 Ω. If the cross section of this wire is 3.0…

A: Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is…

Q: A common flashlight bulb is rated at 0.30A and 2.9V (the values of the current and voltage under…

A: See below

Q: At 20°C, the carbon resistor in an electric circuit connected to a 7.3-V battery has a resistance of…

A: Given data, initial temperature T1 = 20oC Final temperature T2 = 75oC Resistance at 20oC is R1 =…

Q: A three quarter disk that extends from Φ = 0 to Φ = 3π/2 has thickness of t = 2 mm. The outer radius…

A:

Q: stivity is 10° Q.m at 20 n °C) of the material

A:

Q: When a tungsten wire of thickness 20.4 mm, length of 3 m and electrical resistivity is 5.8 x 10-8…

A: Given a tungsten wire of thickness 20.4 mm, length of 3 m and electrical resistivity is ρ=5.8×10-8…

Q: What is the resistance of a 21-cm-long column of blood in a 0.80-cm- diameter femoral artery? The…

A:

Q: The resistance of a wire that is 105 cm long is 20.5 Q. After the temperature change, its resistance…

A: Information Given:- Length of the wire is l=105 cm Initial resistance of the wire is R0=20.5 Ω…

Q: 1 0.500-meter length of wire with a cross-sectional area of 3.14 x 106 meters squared is found to…

A: Given value--- length = 0.5 m. Area = 3.14 × 10-6 m2 . Resistance = 2.53 × 10-3 ohm. We have to…

Q: a copper wire has diameter 0.5mm and resistivity of 1.6×10^-8 what will be the length of the wire to…

A: The equation for resistance is, R=ρlAsince A=πd24R=ρlπd24R=4ρlπd2 thus, the length is, 10…

Q: At 20°C, the carbon resistor in an electric circuit connected to a 5.0-V battery has a resistance of…

A: The variation of resistance with temperature is given by,

Q: An aluminum wire has a length of 27.0 m and a resistance of 4.30 2 at 20.0°C. Assuming a circular…

A:

Q: Of what material is a resistor made if its resistance is 40.0% greater at 100°C than at 20.0°C?

A: Given, Resistance is 40.0% greater at 100°C than at 20.0°C Let T1=20 c T2=100c Resistance at 20c=Ro…

Q: A copper wire has a length of 2 meters and a cross-sectional area of 3×10^{−6} square meters. The…

A: To determine the resistivity of the wire, we need to use Ohm's Law, which states that the potential…

Q: A certain lightbulb has a tungsten filament with a resistance of 18.5 N when cold and 136 N when…

A:

Q: If the resistance of a conductor is 4000 Ω, the length is 8 m and the resistivity value is 2000,…

A: solution as

Q: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. Assume constant…

A: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. cross sectional…

Q: •21 ILW A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage…

A: Operating resistance of the bulb is R=VI=2.9 V0.3 A=9.67Ω

Q: A conducting wire is 25 cm long and has a diameter of 0.5 mm. You measured the resistance of the…

A:

Q: The measurable resistance of a wire with a length of 2.4 m and a vertical cross section of 0.03 cm2…

A:

Q: At 20°C, the carbon resistor in an electric circuit connected to a 3.5-V battery has a resistance of…

A:

Q: Silver at room temperature is found to have a resistivity of 1.59×108 №∙m. If the temperature i…

A: The resistivity which determines the resistance of a material to the flow of electric current will…

Q: Problem 1. A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41.O N at…

A: solution as

Q: When aluminum is used for electrical wire, it is common to use a large-diameter wire than would be…

A: The resistivity of aluminum ρA=2.65×10-8Ωm The resistivity of copper ρC=1.68×10-8Ωm The cross…

Q: At 20°C, a 7.5 m long copper wire has a cross-sectional diameter of 1 mm. What is the copper wire's…

A: initial temperature = t1= 20 degree centigrade final temperature = t2= 50 diameter = 2r = 1 mm

Q: The lengths of two conductor wires made of different materials are L1-2L2 and The resistors are…

A: The relation between resistance and resistivity is given byR = r×LA where R is resistancer is…

Q: At 25°C, the resistance of a segment of gold wire is 59 N. When the wire is placed in a liquid bath,…

A: Given, At (T1)= 25°C  resistance of wire is (R1)= 59 ohm. When wire placed in liquid bath( having…

Q: There is a potential difference of 1 V between the ends of a 10 cm long graphite rod that has a…

A:

Q: A 24 m length sample of an unknown metal wire is connected to a known ?= 0.56 Ω resistor and a ?= 24…

A: The current through the known resistance and wire is same since they are series. the current through…

Q: A copper transmission line is to be replaced by one of aluminum having the same total resistance. If…

A: Given data: Let the length of each wire is L. Resistivity of copper wire, ρcu=1.68×10-8 Ω-m.…

Q: A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage under…

A: Given V at Operating temperature- 2.9V Current at Operating temp- 0.30A R1 = Resistance at room…

Q: A coil of wire has a resistance of 36.2Ω at 26 °C and 61.7Ω at 67 °C. What is the temperature…

A:

Q: A copper wire has a resistance of 0.51 Ω at 20.0°C, and an iron wire has a resistance of 0.57 Ω at…

A:

Q: A transmission line cable consists of 7 strands of identical copper conductors. The physical length…

A: Original length of the cable, L0=6 km=6000 m The length of the conductors are increased by 4% The…

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.