A copper wire is found to be having a resistance of 106.95 m at normal temperature. If the temperature coefficient of resistance for copper is 0.00386°C-1, what would be the resistance of the wire when it is heated to 800°C ?
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: A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of…
A:
Q: 17.2 A given copper wire has a resistance of 5.18 Ω at 20.0°C while a tungsten wire of the same…
A:
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: Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a…
A: Resistance for a wire can be found from R=ρLA where ρ is the resistivity of material, L is length…
Q: Two platinum wires (E & F) are found in a closet. Wire E has a resistance of RE. Wire F is 3 times…
A: The resistance of the wire E is .Wire F is 3 times shorter than wire E.The cross-sectional area of…
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: pper wire has a resistance of 0.525 N at 20.0°C, and an iron wire has a resistance of 0.560 N at the…
A:
Q: A platinum wire has a resistance of 79.6 ohms at 28oC. At what temperature will the resistance of…
A: initial temperature = t1 = 280 c initial resistance = R1 = 79.6 Ohms final temperature = t2 = ?…
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: The resistance of a copper wire is measured to be 3.80 Ω at 21.6°C. What is the resistance of this…
A: Write down all the given parameters and formula
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: As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. If a…
A:
Q: A conductor having a resistance of 50 ohms has temperature coefficient of resistivity of 4.143x10^-3…
A:
Q: A physics student is studying the effect of temperature on the resistance of a current carrying…
A:
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: The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it…
A: Given αgold=0.0034 (C0)-1 αtungsten=0.0045 (C0)-1∆RRgold=7.9%
Q: The resistance of copper wire with a = 0.00393/C° at 20°C is 85 Q. At 56 °C, its resistance would be…
A:
Q: A common flashlight bulb is rated at 0.25 A and 2.6 V (the values of the current and voltage under…
A:
Q: A wire at a temperature of 60.7°C has a resistance of 35.6 Ω. At 164°C the resistance is 94.7 Ω.…
A: Original resistance = 35.6 ohm new resistance = 94.7 ohm change in temperature = 164-60.7 = 103.3 C…
Q: The resistance of a copper wire at 20 degrees is 40Ω. The length of an aluminum wire is 6 times the…
A:
Q: e same wire at -88.0°C, what current should she expect (in A)? The temperature coefficient of…
A:


Step by step
Solved in 3 steps

- Two identical resistors of R0=32 omega are connected head to tail. Part (a) Express the resistance R0 of one of the resistors in terms of the resistivity, length L, and the cross section area A. Part (b) calculate the total resistance R of the two resistors in ohms.A common flashlight bulb is rated at 0.25 A and 2.5 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.5 Q2, what is the temperature of the filament when the bulb is on? The temperature coefficient of resistivity is 5.3 × 103 K¹ for the filament material. Number UnitsA platinum resistance thermometer (PRT) is a transducer which measures temperature 0 by means of consequent change of electrical resistance RT between its two terminals. Such a PRT has the following quadratic characteristic: RT=Ro [1+A0+BO^2] The PRT is calibrated so that its resistance is Ro = 100 Q at a reference temperature of 0 = 0°C. The coefficients have the following values: A = +4.0 x 10-3 °C-1 B = -5.0 x 10-6 oc-2 Determine sensitivity of this transducer at temperatures of +50 °C. Select one: O a. 0.45 Q/°C Ob. -0.45 Q/°C -0.35 Ω/ΟC d. 0.4 0/°C O e. 0.35 Q/°C O f. -0.4 0/PC
- 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?At 25°C, the resistance of a segment of gold wire is 59 . When the wire is placed in a liquid bath, the resistance increases to 193 N. The temperature coefficient is 0.0034 (°C) -¹ -1 at 20°C. What is the temperature of the bath? Answer in units of °C.A certain material is in a room at 25°C. If the absolute temperature (K) of the material is tripled, its resistance doubles. (Water freezes at 273 K.) What is the value for α, the temperature coefficient of resistivity?
- 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.Nichrome is an alloy used for making electric heater wires. A nichrome wire of diameter 0.50 mm is to be used for this purpose. In operating conditions, the temperature of the wire is 968 °C, and the power of the electric heater is 1.5 kW. The potential difference applied to the heater wire is 110 volts. What should be the resistance (in ohms) of the wire at room temperature (20°C)? Electrical resistivity of nichrome at 20°C= 1.0 x 10-6 Qm Temperature coefficient of resistivity = 0.4 x 10-3 C-1A copper wire has a resistance of 0.375 2 at 20.0\deg C, and an iron wire has a resistance of 0.400 at the same temperature. At what temperature (in \deg C) are their resistances equal?
- 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 platinum resistance thermometer has a resistance R0 = 50 Ω at atemperature To of 20 °C. The temperature coefficient of resistance for theconductor for Pt (α) is 3.92 x 10-3 (°C)-1. The thermometer is immersed in avessel containing molten tin, at which point the resistance increases to 92.8Ω. What is temperature of the liquid tin?The resistance of a wire at 45 °C is 20 ohms. If the temperature coefficient of resistance at 0°C is 0.004115/°C, determine the resistance of the conductor at 100°C. Please answer with a complete solution.