1. An electric heater has a Nichrome heating element with a resistance of 8.00 N at 20°C. When 120 V are applied, the electric current heats the Nichrome wire to 900°C. What is the operating wattage of this heater? (The temperature coefficient of resistivity of Nichrome is a = 0.0004 Co-1) Watts

Q: 1. The total charge entering a terminal is given by q = 2e cos (6t), in uC. Determine the current at…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: . An Iron wire at 0 Celcius has resistivity Ro. At which temperature the resistiv-

A: Δρ=αρ₁ΔT

Q: A capacitor of capacitance C=40 µF capacitor is used in conjunction with a motor. How much energy…

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 15.Sketch I-V graphs for the following cases and identify which graph corresponds to which type of…

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Q: A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 38.8 Q at 20.0°C. If…

A: Find the temperature coefficient of resistivity. R=R01+αT-T0RR0=1+αT-T0RR0-1=αT-T0α=RR0-1T-T0

Q: A resistor is found to have a resistance of 100Sat 20°C and a resistance of 112 at 55° What is the…

A: Electricity.

Q: 6 A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change…

A: Given: Resistivity constant and thermal constant of Nichrome and aluminum wire are as follows,…

Q: 6. Internal resistance of cell when there is current of 0.40A when a battery of 6.0V is connected to…

A: Given, Current in the circuit, i = 0.4 A EMF of the battery, ε = 6.0V resistance, R = 14.5 ohms

Q: 7. Calculate the resistance of a 30.0 meter silver wire with a radius of .03 m. Hint: the wire is a…

A: This question can easily be solved by applying a basic concepts of resistance of the wire and…

Q: 4. Wire A and B are made of the same material and have the same length. However, the diameter of…

A: Given : da = 3 db  Ra = 12 ohm

Q: 1. What current flows through a 0.50 mm diameter wire of Platinum that is 80.0 cm long, when 12 V is…

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Q: What is the resistance of a wire made of a material with a resistivity of 32×10° Q·m if its length…

A:

Q: A wire 3.00 m long and 0.450 mm? in cross-sectional area has a resistance of 40.6 2 at 20.0°C. If…

A: We have the expression of Resistance values for conductors at any temperature (T°C):

Q: Current and Resistance Problem 9:   An extension cord that has a length of 9.65m is made from wire…

A: Please see the attached image for the solution.  If there are queries or if the image is not…

Q: FIGURE A 30: 4.5 11.02 13-12 1952 2702 1. Determine the Equivalent Resistance, Equivalent Current,…

A:

Q: 2. A 50 m long wire with a cross-sectional area of 5.5 mm2 has a resistance of 31 Ω at 0 °C.…

A:

Q: The resistivity of gold is 2.44 × 10-º Q • m at room temperature. A gold wire that is 0.9 mm in…

A: Given information: The resistivity of the gold (ρ) = 2.44×10-8 ohm .m  The diameter of the gold wire…

Q: 4. Consider the power dissipated by a resistor, P=I°R . Suppose we have a current of 1 amp and a…

A:

Q: A copper wire has a resistance of 0.5000at 20.0°C, and an iron wire has a resistance of 0.525 at the…

A: Given that-Initial resistance of the copper wire, R0Cu= 0.500ΩInitial resistance of the iron wire,…

Q: 4. The resistance of a resistor changes with temperature; the equation is given as: R= a T^2 + bT+…

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Q: . A certain lightbulb has a tungsten filament with a resistance of 19.0 N when at 20.0°C and 140 N…

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Q: A 3.5m long wire with a radius of 22.0mm has a resistance of 29.1ohms at 20degreesC. If its…

A: Given data: Length of the wire is, L = 3.5 m The radius of the wire is, r =22 mm= 0.022 m Initial…

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A: Ohm's law gave an important relationship relating the voltage and the current in the circuit. The…

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A: "Since, According to the Guidelines we are only allowed to do First three questions, thus I have…

Q: 3. For carbon; P20°c = 3.5 x 10-50-m and a = -5.0 x 10-4/°C. a) At what temperature does a carbon…

A:

Q: A resistor has a temperature coefficient of 0.0009/9C. If the resistor has a resistance of 450 2 at…

A: The resistance of an circuit is the opposition that a circuit offers to the current that flows…

Q: A wire 3.00 m long and 6.450 mm in cross-sectional area has a resistance of 380 at 20C. Ir s…

A:

Q: 0. An electrie power station is producing 1,40 x 10 W of poser tat is to be A to na town located…

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Q: 11. A typical car seat heater produces 10 W of heat using a 0.25 mm diameter steel wire connected to…

A: The resistance is,

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Q: . The maximum power consumption of an air fryer is 1500 W. If it is connected to a 220-V line, (a)…

A:

Q: A thermometer made of Platinum has a resistance of 50 2 at 20 C, what is the measured temperature…

A: Resistance at temperature T, is given by,  R=R01 + α(T-T0) Where, R0 is resistance at temperature…

Q: 8. A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A…

A:

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.