At room temperature (27.0 °C) the resistance of a heating element is 100 2. What is the temperature of the element if the resistance is found to be 117 N, given that the 1.70×10°C' temperature coefficient of the material of the resistor is
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: 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: 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: 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: At room temperature (27.0 °C) the resistance of a heating element is 100 Ω. What is the temperature…
A: Given,
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: S تر A bronze alloy has a resistivity of 13 x 10-6 2 cm. A piece is cut in the shape of a cuboid…
A: Step 1: Step 2: Step 3: Step 4:
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 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 wire is made from a material having a temperature coefficient of resistivity of 0.00125 (°C)". In…
A:
Q: A certain material has a resistance of 5 2 at 20°C. The material is then heated to 800°C, calculate…
A:
Q: (a) The cylinders A-D shown below are all made from copper. Rank them in order of increasing…
A:
Q: The resistance of gold wire used in circuits is usually negligible compared to the components in the…
A: Given: Length,L=47.1cm=47.1×10-2mArea,A=1.7mm2=1.7×10-6m2Resistivity,ρ=2.35×10-8Ωm In an electrical…
Q: e same wire at -88.0°C, what current should she expect (in A)? The temperature coefficient of…
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: In order to double its resistance, by how much would you have to increase the temperature of a piece…
A:
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 piece of material is tested and, at 25oC, it has a resistance of 153Ω. The thermal coefficient of…
A:
Q: A platinum resistance thermometer (PRT) is a transducer which measures temperature 0 by means of…
A:
Step by step
Solved in 2 steps
- A length of aluminum wire has a resistance of 36.0 2 at 24.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, the resistance of the wire increases to 51.5 22. (a) Neglecting thermal expansion, find the temperature of the oven. °℃ (b) Qualitatively, how would thermal expansion be expected to affect the answer?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 the same temperature. At what temperature, in degrees Celsius, are their resistances equal? The temperature coefficient of resistivity of copper is 3.9 × 10-3 (°C)-1, while that for iron is 5.0 × 10-3 (°C)-1.A thermistor is a type of resistor whose resistance varies significantly with temperature, more than in standard resistors. Thermistors are widely used as inrush current limiter, temperature sensors (NTC type typically), self-resetting overcurrent protectors, and self-regulating heating elements. Assume that the relation between resistance (R) in ohms and temperature (T) in Celsius of the thermistor is given by: R=(1+0.3T)/2 By using error propagation formula, calculate the temperature and associated error if R = 15 ± 1 Ω.
- 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?A metallic wire is stretched from original length of 1 m to 5 m. If the original cross- sectional area is 2 square millimeters and original resistance is 8 ohms, determine the new resistance (in ohms) of the metallic wire. Assume the volume of the wire is preserved.A certain material has a resistance of 150 22 at 20°C. The material is then heated to 800°C, calculate the new resistance. Given the temperature coefficient of resistivity of the material is 3.65x10.³ °C-¹.
- A length of aluminum wire has a resistance of 28.0 Ω at 32.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, the resistance of the wire increases to 43.1 Ω. (a) Neglecting thermal expansion, find the temperature of the oven. °C(b) Qualitatively, how would thermal expansion be expected to affect the answer?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?