What causes resistivity in ordinary conductors? Why (and in what way) does the resistivity change if the temperature decreases.

Q: Whale and Kanmuro are two islands located at the Chimera archipelago. These two are separated by a…

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Q: 10. What us the equivalent capacitance of the given circuit below? 1 uF HH a. 3.0µF b. 4.0pF c.…

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Q: A certain resistor is made with a 45.2 m length of fine copper wire, 5.10 x 10-2 mm in diameter,…

A: Given Information:- Length of the wire is l=45.2 m Diameter of the wire is  d=5.10×10-2 mm…

Q: 6) The following list gives data for three situations in which a current is in a wire. For each…

A: Given data:  Current flowing through a wire  Time (t) = 2 minutes = 120 seconds

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A: Given Data : The voltage across in the air conditioner is given as V = 220V The current flowing…

Q: 15-It has been found that aluminum and copper wires of the same length have the same resistance. Of…

A: we know the resistance is proportional to length and and inversely proportional to cross section of…

Q: coefficient

A: In any circuits, the power delivered to the components can be expressed using Ohm's law as, The…

Q: 4. The heating element of an electric coffee maker operates at 120 V and carries a current of 2.00…

A: Given: The voltage of the heating element of the coffee maker is 120 V. The current which the…

Q: 3. In the circuit shown in the figure below, find (a) the current in each branch of the circuit, and…

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Q: 1.) What is the equivalent resistance of the following circuit? 5.0 N 2.5 N 10 N ww ww 10 N 15 0 5.0…

A: Resistors in Series : A circuit is said to be connected in series when the same amount of current…

Q: A 240-kV power transmission line carrying 5.00 X 102 A is hung from grounded metal towers by ceramic…

A: The equivalent resistance of n number of same resistance connected in parallel is,…

Q: 5- chapter27-question28 The current in a resistor decreases by 3.00 A when the voltage applied…

A: Given Data  : The initial voltage across the resistor is given as V1 = 12V The final voltage across…

Q: Question 34.) A short circuit in a 120 V appliance cord has a 0.35 Ω resistance. 1.) Calculate the…

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Q: 9- If a current of 5A passes through a conductor with a resistance of 7 ohms for 3 minutes, how…

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Q: A platinum wire is used to determine the melting point of indium. The resistance of the platinum…

A: The required expression for the melting point temperature of indium,

Q: 280 CHAPTER 6. ELECTRONICS .6.17 How many electrons will pass through a cylindrical copper wire of…

A: We know current density J =I/A Where I = current flowing coper wire  A = area of copper wire But…

Q: -8 What is the resistance of a wire made of a material with a resistivity of 3.2 x 1012 m if its…

A: Given Data:   The resistivity of the wire is, ρ=3.2×10-8Ω m The length of the wire is, L=2.5 m The…

Q: QUESTION 6 In Wheatstone bridge experiment, the relation between Rs and L2/L, that shown in the…

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Q: A piece of Nichrome wire has a radius of 6.5 x 10-4 m. It is used in a laboratory to make a heater…

A: Given: Radius of the wire, r = 6.5×10-4 mPower , P = 3 ×102 WPotential, V = 120 V   Solution: We…

Q: What other physical factors, besides resistively, help to determine the resistance of a conducting…

A: Step1: Let us understand the concept of the problem.   Resistance of a conducting wire is given by :…

Q: (2) How would you expect the resistivity of a good insulator such as glass or polystyrene to vary…

A: (2) In case of insulator ,  resistivity decreases on increasing the temperature but for conductor…

Q: 2. Determine the loop currents Ia, Ip, and Ic. 100 100 100 100 100 Ib 55V 100 V la

A: As there are 3 loops, Lets write kvl equation in each and every loop:- In loop-a:- 100 - 10Ia -…

Q: Whale and Kanmuro are two islands located in the Chimera archipelago. These two are separated by a…

A: Given data: Distance of separation d =20 miles=32.1689 km Maximum power P =600 MW Voltage…

Q: - 44. What is the resistance of an aluminum wire of length 10 m and cross-sectional area of 0.002 m²…

A: length = l = 10 m area = A = 0.002 m2 resistivity = 2.65X10-8X 100.002= 2.65 x 10-8 ohm-m

Q: 7. If diameter of a conductor is doubled, the drift velocity of electrons inside it will [ ] a) Be…

A: When the electric field is applied to the conductor, then the electrons get accelerated but after…

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

A: The resistance of the path is, R=500 Ω The amount of current required is, I=10 mA=10×10-3 A The time…

Q: Exploding shoes. The rain-soaked shoes of a person may explode if ground current from nearby…

A: density of water (d) = 1000 kgm3Latent heat of vapourisation = 2256000 JKg Time (t) = 2.33 ms…

Q: 4- The molecular weight of tungsten is 183.84 gr/mol, ts density is 19.25 gr/cm3, the resistivity of…

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Q: • 29. Calculate (a) the equivalent resistance, (b) the current through the battery, and (c) the…

A: a60, 40, 30  Ω are in parallel1R=160+140+130

Q: A particular wire has a resistivity of 1.5 x 10a- m and a cross-sectional area of 2.5 x 105 m2. A…

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Q: 20 - chapter28-question13 Calculate the current (in A) in 7 fl resistor if a potential difference of…

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Q: 2. If current of I = 5.00 A flows through a wire, How many number of electrons flow througl a point…

A: Given Data : The current in the wire is given as I=5A

Q: wound onto a cylindrical A certain resistor is made with a 51.6 m length of fine copper wire, 4.54 x…

A: We have to use the formula Resistance(R) = resistivity ×lengthArea of cross section

Q: 4. Determine the thermal coefficient of resistance of copper at 30°C, then use this value to…

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Q: 34 - The value is the resistivity at some reference temperature T and is usually taken to be…

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Q: 3- The resistance of a copper wire is 3.35 0 at 0 °C. What is its resistance at 50 °C? For copper, a…

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Q: 13- chapter27-question33 When potential difference across a given copper wire increases, drift…

A: When potential difference across a copper wire is increased then the number of electrons flowing…

Q: 1kO 1.5kN 3kO 5 V 2.2kO 1.7kO

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Q: 19- chapter27-question17 A small current of 1.5x 1010 A exists in a copper wire whose radius is 1.0…

A: The current flowing in a conductor is given by I = n*e*A*Vd Where, I = current n = number of free…

Q: 3. An 18-gauge copper wire (p = 1.72x10% 0.m) has a diameter of 1.02 mm and a cross- sectional area…

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Q: 4. Whale and Kanmuro are two islands located in the Chimera archipelago. These two are separated by…

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Q: 29. Which of the following descriptions is consistent with a constant decrease in the current…

A: Current is charge flowing through a conductor per sec. I=qt To decrease in current we have to…

Q: 011: The voltage on 3 Ω resistor is, in V. (Α) 10.7 (Β) 28.4 012: If P = 210 6-5-F ΠΟΥ Ο (C) -12.8…

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Q: Why does the resistivity of superconductors become zero

A: In a superconductor, below the critical temperature, the electrical resistance falls to zero.

Q: A wire is divided into 3 equal parts and these parts are connected in parallel. How many times the…

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Q: 7. A piece of material with a square cross-section measuring 1 mm on each side has a length of 1 m.…

A: Length (L) = 1 m Side of square cross section = 1mm

Q: If the equivalent resistance of the above circuit is 60, the value of R is a. 1 b. 2 c. 5 d. 4

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Q: hale and Kanmuro are two islands located in the Chimera archipelago. These two are separated by a…

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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.