A coil has a resistance of 12Ω when its mean temperature is 15°C and of 22Ω when its mean temperature is 40°C. Find its mean temperature rise when its resistance is 25Ω and the surrounding temperature is 18°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: A person notices a mild shock if the current along a path through the thumb and index finger exceeds…

A: V = IR

Q: A toaster has a heating element of resistance Ro=10.0 2 at To=20 °C. The resistance increases to…

A: Given: Toaster initial resistance, R0=10 Ω at temp. T0=20 °C Toaster resistance increased value,…

Q: A toaster has a Nichrome (a-4.5 10 C) heating element that has a resistance of Ro 80 at a…

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Q: When initially at 25 C, the power being supplied to a 555 Ohm resistor in a circuit is 7.5 W. Over…

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Q: What current is used by the 220 V AC electric heater which heats 2 kg of water (c = 4200 J/(kg K))…

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Q: A coil is formed by winding 320 turns of insulated 16 gauge copper wire (diameter = 1.4 mm) in a…

A: Given that:- Number of turns=320

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…

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Q: A 1050 W radiant heater is constructed to operate at 115 V. (a) What is the current in the heater…

A: a) We know that the formula of the power is given as  P =VI  where P is the power  V is the voltage…

Q: A coil of copper wire has a length of 10 m. The cross sectional area of the wire is 0.2 mm2. Note:…

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Q: A person notices a mild shock if the current along a path through the thumb and index finger exceeds…

A: The current along the path through the thumb and index finger is, The resistance of the dry skin…

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: For a medium-well steak, the FDA recommends steak to be cooked to the temperature of 145 degrees F.…

A: Due to the flow of the current through the circuit, there is some heat that will be produced…

Q: A toaster has a Nichrome (a-4.5x104 c) heating element that has a resistance of R 80 0 at a…

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Q: A stainless steel wire (σ = 1.11 x 10° Sm¯-) 3 mm in diameter is to be coated with copper (σ = 5.8 ×…

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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: An aluminum resistance thermometer consists of a coil of 5.8273 mm diameter wire in a coil.…

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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: Find the divergence of D for the following. 4x y2 2x -

A: Given: The vector field is given as

Q: An appliance contains a copper wire. When the appliance is not in use, the wire has a resistance of…

A: 5.C We have been provided with an appliance contains a copper wire.When the appliance is not in use,…

Q: machine coil has a resistance of 46 ohms at 25 degrees celsius. Its temperature coefficient of…

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Q: A lamp is connected to a 120 V line. When the switch is first turned on and the filament is cold,…

A: Given data The voltage to which lamp is connected is given as V = 120 V. The Current flowing…

Q: An electrical heating coil is immersed in 6.6 kg of water at 22 °C.The coil, which has a resistance…

A: The expression for find potential difference is P=QtV2R=mcTf-TitV=mcRTf-Tit

Q: (a) What is the cost of heating a hot tub containing 1490 kg of water from 10.0°C to 40.0°C,…

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Q: An electric motor winding uses 1800 m of copper conductor with a cross-sectional area of 0.26 cm2.…

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Q: A given copper wire has a resistance of 5.02 Ω at 20.0°C while a tungsten wire of the same diameter…

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Q: The heating element of a coffeemaker operates at 120 V and carries a current of 2.50 A. Assuming the…

A: Given data The operating voltage of a coffee maker is V = 120 V. The current carried by the coffee I…

Q: A toaster has a Nichrome (a=4.5x104 °C-) heating element that has a resistance of Ro= 80 Q at a…

A: Solution

Q: A length of aluminum wire has a resistance of 22.0 omega at 14.0 degrees celcius. When the wire is…

A:

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 toaster is rated as drawing 850 W of power at 120 V. The cord of the toaster is connected to an…

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Q: During open-heart surgery, a defibrillator can be used to bring a patient out of cardiac arrest.…

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Q: Solve the following problems with complete solutions and units using 2 decimal digits: The tungsten…

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Q: Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of…

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Q: What is the required resistance of an immersion heater that increases the temperature of 1.50 kg of…

A: Write the given values with the suitable variables. m=1.50 kgT1=10 °CT2=50 °Ct=10 min=600 sV=110 V…

Q: A copper wire has a resistance of 0.505 Ω at 20.0°C, and an iron wire has a resistance of 0.537 Ω at…

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Q: A copper wire has a resistance of 0.400 Ω at 20.0°C, and an iron wire has a resistance of 0.426 Ω at…

A: To determine: The temperature at which the resistance of the copper and iron will be equal   Given:…

Q: An electrical heating coil is immersed in 3.52kg of water at 22C. The coil, which has a resistance…

A: The heat produced by electric resistance is given by = (V2/*R)*t Heat given to te water = m *s*∆T…

Q: Of what material is a resistor made if its resistance is 40.0% greater at 100.0 °C than at 20.0 °C ?

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Q: The thermal coefficient of resistivity of iron is alpha = 5.0 x 10 ^ (- 3 / ° C), that of carbon is…

A: Given data The thermal coefficient of resistivity of iron αi=5×10-3/°C. The thermal coefficient of…