Besides tungsten, what other materials are used for cathodes in vacuum tubes? 2. What is the advantage of directly heated cathodes?

Q: Why electrons are more mobile than the holes?

A: Electrons, when excited, move from the valence band to the conduction band. These electrons in the…

Q: kindly Briefly explain the opacity and translucency in insulators. thank you!

A: The insulators in which light can pass partially, or we can see partial through the insulators, they…

Q: Two charges are arranged on a number line. A positive 3C charge is located at zero. A  negative 5C…

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Q: A copper wire of radius a -0.248 mm has an aluminum jacket of outer radius b = 0.304 mm. There is a…

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Q: Write a question appropriate for this course about the amount of charge stored in a large capacitor…

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Q: compare dielectric properties of oil with solid insulators and liquid insulators ??????

A: Insulators:- A substance that prevents the free flow of electrical current is known as an electrical…

Q: 24 - Charging an object by induction requires .............. ?     A) rubbing after contact  B)…

A: Choose the correct option Charging an object by induction requires...

Q: Four q=2.00 nC point charges are located at P1(0.00, -2.00, 0.00)m, P2(0.00, 2.00, 0.00)m, P3(0.00,…

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Q: A nickel chromium alloy conductor of resitance 24 ohms is 110 inches long and has a resistivity of…

A: Given Resistance of conductor R =24 Ω Length of conductor =l= 110 inch resistivity =ρ =640 Ω -CMft…

Q: Four point charges q1 = 43.00 nC, q2 = –37.00 nC, q3 = 3.00 nC and q4 = 38.00 nC are found at the…

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Q: An ebony circular disk has a uniformly charge density of 2 C per square meter. The radius of the…

A: Given, A uniform circular disk has a uniform charge density ρ=2 C/m2. Radius of the disk r=1 cm.

Q: A copper wire of radius a = 0.172 mm has an aluminum jacket of outer radius b = 0.231 mm. There is a…

A: Data Given ,  Inner Radius of the wire ( a ) = 0.172 mm = 0.172 × 10-3 m Outer Radius of wire ( b )…

Q: Four unknown point charges are heid at the corners of a swuare.Suppose q, is at equilibrium and q -…

A: First we will find out net force on charge particle q4 then we will equivate it to zero to calculate…

Q: The potential at a point due to a charge of 100 micro coulomb at a distance of 9m will be

A: The potential at a point due to a charge at a distance of 9m ?  Charge Q = 100 micro coulomb

Q: Problem 2.11: In the magnetic circuit shown in Figure 2.68, the number of turns N is 1,000, the…

A: Given Number of turns =N=1000 Current through coil ,i=cos50000t Cross sectional area of core , A =1…

Q: What is the electric field at a point (the black dot) that is 10 cm from a +1 nC charge? Draw an…

A: An electric field is a vector field that surrounds electric charges and exerts a force on other…

Q: What will be the charge to mass ratio of electrons?

A: The explanation is as follows.

Q: A metallic conductor, …… .. Please choose one: a. there are four electrons in its outer shell. b. it…

A: Metallic conductors have loosely bound electrons. But overall the conductor is neutral.

Q: b) Figure 6 shows a moveable wire PQ across a magnetic field B with force F at a constant velocity…

A: Given : v=4.0 cm/s=0.04 m/sI=10 cm=0.1 mB=0.5 TR=0.8 Ω The magnitude of induced emf is given by:…

Q: In the figure below, analytically determine the electric field at point P. Where q1 = q2 = q. 92 2…

A: The electric field at any point is defined as the electrostatic force experienced by a unit positive…

Q: Given Four point charges, of 1.00 nC each, located at P1(0.00, -2.00, 0.00)m, P2(0.00, 2.00, 0.00)m,…

A: Given Data:Four point charges of,Locations of, m m m mTo Find:The total force acting on the charge…

Q: * The 0.6 m rod of a metal elongates 0.67 mm on heating from 35 to 90 C. Determine the value of the…

A: We need to find out the coefficient for length

Q: Q5 Choose Two only A) Explain briefly various theories of breakdown in liquid dielectrics. B) What…

A: Here we solved 2  and 3 question Sphere gap are used for the measurement of voltage (DC or AC…

Q: Can you Briefly explain any four gaseous insulating materials.??

A: All gases are more or less insulators but air is the most important insulating material which is…

Q: 1. Pure germanium has (4 × 104) atom. cm doped by indium atoms, the impurity is add to the extent of…

A: Given that intrinsic concentration of Ge is 2.5*1013 cm-3. ni==2.5*1019 m-3. The mobility of…

Q: a) Assuming an infinite plate capacitor model, determine the force on an electron between the…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: µ = 0.01 H/m SW2 50 cm L R N = 100 12V 0.5 Core Area: 0.06 m²

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Q: The potential difference V is defined as the work done by an external source in moving a unit…

A: The potential difference is defined as the work done by an external source in moving a unit positive…

Q: In the figure below, analytically determine the electric field at point P. Where q1 = q2 = q. • 92…

A: The electric field at any point is defined as the electrostatic force experienced by a unit positive…

Q: In the circuit, Figure (5), calculate the value of the time constant (T) by calculation and by the…

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Q: Please help me understand what this question is asking

A: MMF - (Magneto-motive force) , It is generally denoted by Fm. Mathematically it is equal to product…

Q: (b) Figure Q3(b) shows a magnetic circuit with two different material. with a mean cross- sectional…

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Q: D. Is the potential energy of the positive point charge positive, negative, or zero? Explain.

A: Given:- Positive Point charge given…

Q: A material with high conductivity is referred to as: Select your answer. metal insulator…

A: Answer: metal   Explanation:   a. It is a valid option. A material with high conductivity is…

Q: we had equally like charges arranged in a pattern of of aclock face. There are 12 equally like…

A: Consider the value of each charge to be q coulomb. The value of electric potential due to each…

Q: 1.What would a perfect insulator be like? Is absolutely non conducting such matter does not exist O…

A: As per company guidelines we are supposed to answer only one question. Kindly repost other questions…

Q: Calculate the relative permeability of an iron ring has mean diameter of 15 cm, a cross section of…

A: Given: Diameter, d=15 cm=0.15 m Cross section, A=1.4 cm2=1.4×10-4 m2 Length of air gap, lg=0.4…

Q: 3. An insulator is in the form of a linear curve (in the unit of meter) with the parametric…

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Q: Discuss the deflection of electron beam in a C. R.O in electric and magnetic fields.

A: A cathode ray oscilloscope (CRO) is a device used to measure electrical signals, time intervals and…

Q: 7.56 For the network shown in Fig. 7.122, find v(t) for t> 0. 5Ω Fi F. t = 0 6Ω +) 20 V + 2 A (4 12…

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Types of Charge Carriers

A carrier is a type of object which carries a particular thing from one point to another point. For instance, people use different vehicles from one place to another, and the vehicle carries those people and acts as a carrier.