Lab 2 - Electric Field Introduction

. What is the purpose of a discharge device used in conjunction with opening a highly inductive circuit?a) to minimize the possibility of damage to the circuits insulation as a result of a high induced voltage b) to minimize the possibility of endangering the life of the person opening the controlling switch c) to allow the magnetic field to gradually collapse, thus limiting the value of the self-induced ernf d) all of the above

help me provide a picture of a device that is used everyday with the concept of this image. And explain the mechanism and principles of the device's operation

Solve only "d" part.

Processing Questions:1. What can you predict about the polarities of charges? Why?2. What happens when you move the two balloons near each other after rubbing?3. What is the role of electron transfer in electrostatic charging by rubbing?

Fast and very fast please...

Make graphs of induced voltage vs. time in each of the following cases.  Draw each graph below and explain briefly. a) A stationary magnet lying in a stationary coil. b. Holding the coil stationary, moving the magnet horizontally in and out of the coil. c) Moving the magnet and the coil as a unit, back and forth horizontally d. Holding the magnet stationary, and moving the coil in and out horizontally.e. Does it matter which moves ? What would happen if they both move towards each other? Explain.d) Holding the magnet stationary, and moving the coil in and out horizontally.

Current is the flow of charges in a directed path. When we connect yourmobile phone charger to the sockets in your various homes, charges startflowing through. Describe into details where these charges are generatedfrom and the processes involved.

5) ) The point charge at the bottom of the figure is, Q = 17 nC and the curve is a circular arc, of radius r = 5 cm. What is the magnitude of the force on the charge Q due to the other point charges shown? -6.0 nC 2.0 nC 2.0 nC 45° 45° 5.0 cm 5.0 cm +) Explain or Show Work Here:

What is Lenz's law and derive its formula.

In this Exercise 6 we will explore laws critical to the study of electromagnetism. We will be using Simulation 3 (below) to explore how a moving magnet produces current in a nearby coil of wire.   a. Magnetic field strength decreases as you get farther from the poles of the magnet. Does the flux through the face of the coil change as you move the magnet? Explain your answer. b. Why does the meter needle deflect? Is the deflection in accordance with Lenz’s Law? Justify your answer in terms of Lenz’s law and your above answers.

a) a) The diagram below illustrates an experiment with electrons. A beam of electrons is created using an electron gun, and deflected using an electric field. + ve plate Electron – ve plate I. Explain how the electron gun creates a beam of electrons. Add to the diagram if that will help your explanation. II. The electric field which deflects the beam is created by applying a potential difference of 2500 V across plates 9.0 cm apart. Show that the vertical acceleration of the electrons due to this field is about 5 × 1015 m s–2.

Q2. a) Explain the terms: electro emission, surface barrier, and work function. b) What general condition must be satisfied before an electron can escape from the surface of a material? c) Why are valence electrons of a material so important?

Goal:The intent of this problem is to understand how electrostatic models can be used outside of electrical engineering. This basic model is used to understand chemical reactions, bonding, and other forms of atomic processes. It also shows you the strength of electrostatic forces in an atom. The Thomson model of a hydrogen atom is a sphere of positive charge with radius Ro with an electron (a point charge) at its center. The total positive charge equals the electronic charge q. What is the force of attraction between an electron at a distance R from the center of the sphere of positive charge? OOOO qR 4π€, Ro O q²R 3πEO q²R 4π€, Ro