At room temperature (27.0 °C) the resistance of a heating element is 100 Q. What is the temperature of the element if the resistance is found to be 117 Q, given that the temperature coefficient of the material of the resistor is 1.70 × 104 °C-1.
Q: A coil of wire has a cold resistance (20°C) of 0.25 2 and the temperature coefficient is found to be…
A: The resistance of an object depends on its length, area, and an intrinsic property of the material…
Q: The resistance of a copper wire at 7⁰C is 50 mΩ. If the temperature coefficient of copper at 0⁰C is…
A:
Q: When initially at 25 C, the power being supplied to a 555 Ohm resistor in a circuit is 7.5 W. Over…
A:
Q: When all the ion channels in a cell membrane are closed, the resistivity is very high. However if…
A:
Q: An advanced lab student is studying the effect of temperature on the resistance of a current…
A: The solution is attached below. i= 3.404AExplanation:
Q: The resistance R of a piece of wire has thermometric properties which can be described as a linear…
A: Given: R = mT1/2+nWhen T = 0° C, R = 4.8 ΩWhen T = 100° C , R = 9.3Ω
Q: A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of…
A:
Q: A copper wire of radius a = 0.161 mm has an aluminum jacket of outer radius b = 0.224 mm. There is a…
A: Data Given , Inner Radius of the wire ( a ) = 0.161 mm = 0.161 × 10-3 m Outer Radius of wire ( b )…
Q: At room temperature (27.0 °C) the resistance of a heating element is 100 Ω. What is the temperature…
A: Given,
Q: A taser sends about 1100 V through the human body, resulting in an average current of 2.5 mA. From…
A: Human body acts as an electrical resistance when voltage is applied through it. Because of the…
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: A piece of Nichrome wire has a radius of 5.0x 104 m. It is used in a laboratory to make a heater…
A: Given, For a Nichrome wire the radius of the wire is a=5×10-4m Power dissipates is P=4×102W voltage…
Q: n electronic device designed to operate at any temperature in the range from -17.6°C to 57.9°C…
A: The relation between resistance and temperature is given by:- ∆R= Rα∆T Where; ∆R= change in…
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: A battery with emf E and internal resistance r is first connectedto a resistor of resistance R1 = R,…
A: In the first case, the battery with emf E and internal resistance r is connected to a resistance R.…
Q: A length of aluminum wire has a resistance of 36.0 at 24.0°C. When the wire is warmed in an oven and…
A: Given: At 24° C , Resistance = 36 ΩAt temperature T , resistance = 51.5 ΩTemperature coefficient of…
Q: At room temperature (27.0 °C) the resistance of a heating element is 100 2. What is the temperature…
A: Given that - room temperature Resistance at room temperature Resistance at increased temperature…
Q: 1.4 The resistance of a wire is given by R = R₁(1+at+ẞt²) where t is the temperature in degrees…
A: Here is the step-by-step explanationStep 1: Calculation of the resistance at 70oC using the given…
Q: A thin silver wire has a resistance of 0.5 ohms when its temperature(in K) is To. The wire is then…
A: Temperature coefficient of silver = 0.0038 °C-1
Q: A conducting cable of length 23.5 m and radius 0.500 mm is connected to the battery providing…
A:
Q: Given the temperature coefficient of resistivity of a certain wire to be 3.1 x10−3 (°C)−1.By what…
A: Given temperature coefficient of resistivity , α=3.1 x10−3 (°C)−1 Let T1 =20.0°C T2 = 79.48…
Q: A 220. V potential difference is applied to a space heater that dissipates 440. W during operation.…
A:
Q: The electrical resistance in ohms of a certain thermometer varies with temperature according to the…
A: R = R0 [1 + α (T – T0 )] . . . . . . . . . . . (1)Here, R0 and T0 are the initial resistance and…
Q: When initially at 20°C, the power being supplied to a 553 Ohm resistor in a circuit is 7.20 W. Over…
A:
Q: A certain material has a resistance of 250 2 at 20°C. The material is then heated to 1500°C,…
A: We have initial Resistance Ro = 250 ohm Final resistance = R initial temperature To = 20oC…
Q: A platinum resistance thermometer (PRT) is a transducer which measures temperature 0 by means of…
A:
Q: Nichrome is an alloy used for making electric heater wires. A nichrome wire of diameter 0.50 mm is o…
A: Current electricity.
Q: height h and radii r₁ and r2 at either end. Calculate the resistance of the cone between the two…
A: The resistance is the measure of opposition faced by the flow of charge in electrical circuit.…
Step by step
Solved in 2 steps with 2 images
- The resistance of a coil of copper wire is 4 Ω at 5 °C . What is the resistance at 55 °C .The coefficient of resistivity for copper is 4.3 × 10−3°C−.A tungsten wire in a vacuum has length 26.0 cm and radius 6.00 mm. A potential difference is applied across it. (a) What is the resistance of the wire at 293 K? Ω (b) Suppose the wire reaches an equilibrium temperature such that it emits 70.0 W in the form of radiation. Neglecting absorption of any radiation from its environment, what is the temperature of the wire? (Note: e = 0.320 for tungsten.) K (c) What is the resistance of the wire at the temperature found in part (b)? Assume the temperature changes linearly over this temperature range. Ω. (d) What voltage drop is required across the wire? (e) Why are tungsten lightbulbs energetically inefficient as light sources?The resistivity of a material used to make a round 950W resistor is 53W per unit length. If the resistor has a radius of 0.16 in, what is it’s length?
- Resistance, R, is defined using R = V/I where V is the potential across a resistor, and I is thecurrent. R is measured in ohms (Ω), where 1 Ω = 1 V/A. The constant you determined in eachequation should be similar to the resistance of each resistor. However, resistors aremanufactured such that their actual value is within a tolerance. For many common resistors, thetolerance is 5% or 10%. Calculate the range of possible values for each resistor. Does the constant in each equation fit within the appropriate range of values for each resistor? Do the resistors follow Ohm’s law? Base your answer on your experimental data. Slope (V/A) Y-intercept (V) Resistor 10 Ω 9.896V/A 0.0005526V Resistor 51 Ω 50.91V/A 0.01030V Light bulb (first 3 pts) 5.386V/A n/a Light bulb (last 10 pts) 43.26V/A n/aSuppose at 70°C the resistance of a platinum resistance thermometer is 170 Ω. When placed in aparticular solution, the resistance is 7+100 Ω. What is the temperature of this solution?Temperature Coefficient of resistivity for platinum is 3.93 x 10-3 1/ 0 C.When initially at 20°C, the power being supplied to a 691 Ohm resistor in a circuit is 8.29 W. Over time, the temperature of the resistor increase to 168°C. If the temperature coefficient of resistivity of the material composing the resistor is 5.75 x 10-3 °C-1, what power is supplied to the resistor at its operating temperature?