7. An electric heater is made of Nichrome wire. The wire has a resistance of 15.2 Ω at a temperature of 20°C. Determine the resistance of the Nichrome wire when the temperature of the wire is increased to 260°C. *Round off to 4 decimal digits

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A: Electrical circuit problem.

Q: 2. Lacking the required 4 N resistor R in the circuit diagram below, you decide to make your own.…

A: Given: The required resistance is 4 ohms. The diameter is 0.3 mm. The resistivity is 1.414×10-6 Ω.m.

Q: 001 If the emf of a battery is 21 V and a current of 44 A is measured when the battery is shorted,…

A:

Q: consider a portable electric blanket that runs on a 6 V battery. If you use copper wire with a 0.5…

A: Given data: Battery Voltage (V) = 6 V Wire Diameter (D) = 0.5 mm = 0.5×10-3 m Power (P) = 20 W…

Q: What is the new resistance in a wire at 50 degree C when initial resistance is 20 ohms at 30 degree…

A: Resistance of any electrical device is the ratio of given voltage to the current flowing through…

Q: 13- At 20 °C, a copper wire has a diameter of 4 mm, a length of 20m, a resistivity of 1.7×10-8 2m…

A:

Q: A metal wire has a resistance of 10.00 A at a temperature of 20.0°C. If the same wire has a…

A: The change in resisitance with respect to change in temperature shows a linear natur.therefore, we…

Q: The terminals of a 0.70 V watch battery are connected by a 120-m-long gold wire with a diameter of…

A: This problem can be solved using ohm's law and resistance of metals formula. Given data , Voltage (…

Q: 0. Determine the temperature at which the resistance of an aluminum wire will be twice its value at…

A: The final resistance of the alumunium is twice of the resistance of aluminium at 20oC. The…

Q: A piece of iron rebar on a construction site measures 2 cm in diameter and is 3m long. What…

A: The resistance can be found using R=LσA Where, σ is electrical conductivity of the material,L is…

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. Resistance in metal wire arises because: a. The electrons are moving randomly b. There are…

A: 1. When electrons move through the metal wire some electrons collide with atoms, other electrons, or…

Q: R] RI R In the figure, if R = 12 Q, the equivalent resistance (in 0) between points a and b is:*

A: In the given circuit, the lower end of the terminal ‘a’ and the upper end of the terminal ‘b’ are…

Q: A copper wire has a resistance of 0.500 22 at 20.0°C and an iron wire has a resistance of 0.525 22…

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

Q: V V We are testing a car battery to measure its internal resistance. We measure a voltage of 11.9…

A:

Q: The charge (0.046 µC) stored in a component in your calculator is released and flows through a…

A:

Q: You are given a number of 22 Q resistors, each capable of dissipating only 4.0 W without being…

A: Resistance of each resistor R = 22 Ω The power dissipation capability of each resistor is P = 4.0 W…

Q: The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it…

A:

Q: Question 12 In order to perform an experiment on electric circuits, a student has to use a 6-ohm…

A: We have 9Ω resistances . We want 6Ω by several connection of 9Ω as in given option.

Q: 14. Calculate the ratio of voltage across to the current flowing through for the battery. bat=[8V I…

A:

Q: Temperatures are often measured with electrical resistance thermometers. Suppose that the resistance…

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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: 1- The drawing shows three different resistors in two different circuits. The battery has a voltage…

A:

Q: R2 R1 R3 Figure 11 1. When a single resistor is connected to a battery, the current through that…

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Q: Material= Lead Resistivity (Ω.m) = 22 x 10- 8 a) Calculate the conductivity of your material.…

A: *We'll answer only the first three sub-parts since the sub-parts to be answered were not specified.…

Q: Find the current through each resistor  b. Record the voltage across each resistor

A:

Q: 3. A total resistance of 3 ohm must be produced by combining an unknown resistor R with a 12 ohm…

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Q: The resistance of a copper wire is originally 16 Q. What is the resistance of the same copper wire…

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Q: Suppose a 11-V battery has an internal resistance of 0.2 ohm. Overall Hint a. What is the current…

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Q: 6. If the potential difference across a resistor is doubled, the resistance is also doubled. A.True…

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Q: These currents are given, 2A, 3A and 5A as shown in the figure. Find the current in 3Ω resistor, the…

A:

Q: Resistivity of silver is less than that of tungsten. If a tungsten wire and a silver wire are having…

A: Resistivity of silver < Resistivity of tungsten Length and Area of silver wire = Length and Area…

Q: A 200 Q resistor has a certain colour code. If one replaces the red colour by green in the code, the…

A:

Q: Which of the following best describes the temperature coefficient of resistance of a certain…

A: R2 = R1 [ 1+ a(T2 - T1) ] R2 = resistance at temperature T2  R1 = resistance at temperature T1 a…

Q: 7. Lightning discharges and lightning occur when charges are separated at different heights in the…

A:

Q: A rod (length = 40 cm) with a rectangular cross section (1.5 mm X2.0 mm) has a resistance of 0.20…

A:

Q: Which if the following statement is false? * The current through two resistors in series are equal.…

A: