UNIT-III Maxwell`s equations (Time varying fields)
... In this chapter we will consider the time varying scenario. In the time varying case we will observe that a changing magnetic field will produce a changing electric field and vice versa. We begin our discussion with Faraday's Law of electromagnetic induction and then present the Maxwell's equations ...
... In this chapter we will consider the time varying scenario. In the time varying case we will observe that a changing magnetic field will produce a changing electric field and vice versa. We begin our discussion with Faraday's Law of electromagnetic induction and then present the Maxwell's equations ...
Wednesday, Sept. 7, 2005
... Motion of a Charged Particle in an Electric Field • If an object with an electric charge q is at a point in space where electric field is E, the force exerting on the object is F qE. • What do you think will happen? – Let’s think about the cases like these on the right. – The object will move alo ...
... Motion of a Charged Particle in an Electric Field • If an object with an electric charge q is at a point in space where electric field is E, the force exerting on the object is F qE. • What do you think will happen? – Let’s think about the cases like these on the right. – The object will move alo ...
Lecture38_Radio
... …even the fluctuations of AC current! This means with the inductor in place, the AC current never makes it to quite as high as maximum values (before reversing direction) when with the inductor. the rms average current is also lower then, so I2R, the power consumed in the light-bulb is much less! ...
... …even the fluctuations of AC current! This means with the inductor in place, the AC current never makes it to quite as high as maximum values (before reversing direction) when with the inductor. the rms average current is also lower then, so I2R, the power consumed in the light-bulb is much less! ...
Homework 3
... 3. Calculate the electron and hole concentration under steady-state illumination in an n-type Si with GL=1016 cm-3s-1, ND=1015 cm-3, and τn=τp=10µs. 4. Assume that an n-type semiconductor is uniformly illuminated, producing a uniform excess generation rate G. Show that in steady state, the change in ...
... 3. Calculate the electron and hole concentration under steady-state illumination in an n-type Si with GL=1016 cm-3s-1, ND=1015 cm-3, and τn=τp=10µs. 4. Assume that an n-type semiconductor is uniformly illuminated, producing a uniform excess generation rate G. Show that in steady state, the change in ...
PPT
... Ch. 26: Electric current, current density, non-perfect conductors, resistivity and resistance, Ohm’s Law, power and energy in electric circuits, semiconductor materials, superconductors Ch. 27: DC circuits, energy and work, electromotive force, single and multi-loop circuits, parallel and series com ...
... Ch. 26: Electric current, current density, non-perfect conductors, resistivity and resistance, Ohm’s Law, power and energy in electric circuits, semiconductor materials, superconductors Ch. 27: DC circuits, energy and work, electromotive force, single and multi-loop circuits, parallel and series com ...
General Physics II: Oscillations, Waves, Electromagnetism
... Amazingly, the number of protons and electrons is exactly the same. So when you stand next to someone, you don't feel any force. If each of you had 1% more protons than electrons, the repelling force would be strong enough to lift the earth ...
... Amazingly, the number of protons and electrons is exactly the same. So when you stand next to someone, you don't feel any force. If each of you had 1% more protons than electrons, the repelling force would be strong enough to lift the earth ...
Paper - Kendriya Vidyalaya IIT Chennai
... 1. All questions are compulsory. 2. There are 29 questions in total. Questions 1 to 8 are very short answer type questions and carry one mark each. 3. Questions 9 to 16 carry two marks each, question 17 to 25 carry three marks each, question 26 carry four marks is a value based, and questions 27 to ...
... 1. All questions are compulsory. 2. There are 29 questions in total. Questions 1 to 8 are very short answer type questions and carry one mark each. 3. Questions 9 to 16 carry two marks each, question 17 to 25 carry three marks each, question 26 carry four marks is a value based, and questions 27 to ...
atoms - Waterford Public Schools
... In a given compound, the relative numbs and kinds of atoms are constant Based on In chemical reactions, the total mass of materials present before and after is the same ...
... In a given compound, the relative numbs and kinds of atoms are constant Based on In chemical reactions, the total mass of materials present before and after is the same ...
Creating Electricity from Magnetism
... 7. Put an iron nail through the center of your solenoid. Now run an electric current through the solenoid. How does the presence of the nail effect the performance of the solenoid? The solenoid is now referred to as an electromagnet. ...
... 7. Put an iron nail through the center of your solenoid. Now run an electric current through the solenoid. How does the presence of the nail effect the performance of the solenoid? The solenoid is now referred to as an electromagnet. ...
Electric Potential
... • Charge gains potential energy when it move in the opposite direction from the electric field ...
... • Charge gains potential energy when it move in the opposite direction from the electric field ...
05 Potential and voltage
... ϕ = WE/q [J/C] Potential energy of a charge in electric field: ϕ = E x [(N/C) × m] = [J/C] WE = q E x Potential is always measured with respect A positive charge of 1C was moved by 1mm in the electric field of 10 N/C against the field lines. What is the change in the charge potential energy? q=1C; ∆ ...
... ϕ = WE/q [J/C] Potential energy of a charge in electric field: ϕ = E x [(N/C) × m] = [J/C] WE = q E x Potential is always measured with respect A positive charge of 1C was moved by 1mm in the electric field of 10 N/C against the field lines. What is the change in the charge potential energy? q=1C; ∆ ...
teacher`s notes - event title
... coal. We know when it is working, but it is hard to know exactly what it is. Before we can understand electricity we need to learn about atoms. An atom looks like the sun with the planets spinning around it. The centre is called the nucleus. It is made of tiny protons and neutrons. Electrons move ar ...
... coal. We know when it is working, but it is hard to know exactly what it is. Before we can understand electricity we need to learn about atoms. An atom looks like the sun with the planets spinning around it. The centre is called the nucleus. It is made of tiny protons and neutrons. Electrons move ar ...
Homework-Current
... A) A solid cylindrical straight wire of radius a has a current I flowing down it. If that current is uniformly distributed over the outer surface of the wire (none is flowing through the "volume" of the wire; it's all surface charge), what is the surface current density K? B) Suppose that current do ...
... A) A solid cylindrical straight wire of radius a has a current I flowing down it. If that current is uniformly distributed over the outer surface of the wire (none is flowing through the "volume" of the wire; it's all surface charge), what is the surface current density K? B) Suppose that current do ...
February 8 Magnetism
... Galvanometer is the historical name given to a moving coil electric current detector. When a current is passed through a coil in a magnetic field, the coil experiences a torque proportional to the current. If the coil's movement is opposed by a coil spring, then the amount of deflection of a needle ...
... Galvanometer is the historical name given to a moving coil electric current detector. When a current is passed through a coil in a magnetic field, the coil experiences a torque proportional to the current. If the coil's movement is opposed by a coil spring, then the amount of deflection of a needle ...
Electrostatics
Electrostatics is a branch of physics that deals with the phenomena and properties of stationary or slow-moving electric charges with no acceleration.Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing. The Greek word for amber, ήλεκτρον electron, was the source of the word 'electricity'. Electrostatic phenomena arise from the forces that electric charges exert on each other. Such forces are described by Coulomb's law.Even though electrostatically induced forces seem to be rather weak, the electrostatic force between e.g. an electron and a proton, that together make up a hydrogen atom, is about 36 orders of magnitude stronger than the gravitational force acting between them.There are many examples of electrostatic phenomena, from those as simple as the attraction of the plastic wrap to your hand after you remove it from a package, and the attraction of paper to a charged scale, to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and the operation of photocopiers. Electrostatics involves the buildup of charge on the surface of objects due to contact with other surfaces. Although charge exchange happens whenever any two surfaces contact and separate, the effects of charge exchange are usually only noticed when at least one of the surfaces has a high resistance to electrical flow. This is because the charges that transfer to or from the highly resistive surface are more or less trapped there for a long enough time for their effects to be observed. These charges then remain on the object until they either bleed off to ground or are quickly neutralized by a discharge: e.g., the familiar phenomenon of a static 'shock' is caused by the neutralization of charge built up in the body from contact with insulated surfaces.