Mapping Electric Field and Potential Lines
Laboratory Objectives: 1) Map the equipotential Lines and the electric field intensity lines for several different charge distributions. 2) Compute the values of the electric field intensities for these maps. 3)
Second Physics Laboratory 4B
Laboratory Objectives: 1) Investigate the qualitative response of various circuits by graphing voltage versus current. 2) Determine quantitative values of the resistance of circuit elements under various conditions.
Response o
Lab 04 Capacitors Laboratory Objectives: To investigate various aspects of capacitors. 1) Determine the capacitance of several unknown capacitors. 2) Verify series and parallel combination 3) Find the time constant for an RC circuit.
Equipment: 15 V Power
Measurement of Charge to Mass Ratio Experiment Laboratory Objectives 1) Observe the deflection of an electron beam in a magnetic field. 2) Determine the electron charge to mass ratio e/m. Equipment: 1) Apparatus for e/m 2) Power supply 3) Flashlight 4) Tw
Current Balance
Equipment: Field Balance coil and rectangle Multimeter Milligram Weight Set Connectors and wires Small metric rulers (steel if possible)
Laboratory Objective: To investigate the magnetic force on a current carrying wire in a homogenous mag
Electric Field Question 21.99
Two 1.20 m non-conducting wires meet at a right angle. One segment carries a + 2.50 C of charge distribution uniformly along its length, and the other carries -2.50 C distributed along it as shown in the figure. a) Find the m
Q 22.30
Two very large, non conducting plastic sheets, each 10.0 cm thick, carrying uniform charge densities 1 2 3 4, on their surfaces, as shown in the figure. These charge densities have the value of: 1 = -6.00C/m2 2 = +5.00 C/m2 3 = +2.00 C/m2 4 = +4.0
In the figure shown the loop is being pulled to the right at a constant speed v. A constant current I flows in the long wire, in the direction shown. a) Calculate the magnitude of the net emf induced in the loop. Do this two ways: (i) using Faraday's law
Q 21.1
Lead Ore
Excess electrons are placed on a small lead sphere with mass 8.00g so that its net charge is -3.20 x 10-9 C. a) Find the number of excess electrons on the sphere. b) How many excess electrons are there per lead atom?
The atomic number of l
Q 26.23) In the circuit shown find a) the current in the 3.00 ohm resistor; b) the unknown emfs 1 2; c) the resistance R. Note that the three currents are given Answers: Apply the junction rule at points a, b, c and d to calculate the unknown currents. Th
Laboratory Experiment Basic Circuits Laboratory Objectives: To understand series and parallel circuit connections and how to connect meters for reading current and voltage. Introduction: In a series circuit there is only one path for the flow of charge or
Maxwell's Equations give us the fundamental basis for studying electromagnetic waves. Through is four equations (not really his equations) we will discover that electromagnetic waves are made up of E and B fields that are sinusoidal functions of time and
Inductance Chapter 30
Take a length of copper wire and wrap it around an oatmeal box to form a coil. Place the coil in an electric circuit, does it behave any differently than the same wire when straight? The answer is yes.
Your car has a coil mounted nea
Gauss's Law In this chapter you will learn an easier method to calculate the electric field provided the source charges have a high degree of symmetry. This new way of finding the electric field is called Gauss's Law (though it is really equivalent to Cou
Electric Potential Ch 23
In mechanics, the idea of work and energy made a number of difficult problems much easier to solve. For example the work it takes to push a box across a titled floor with friction. In this chapter we combine the development of wor
Q C= V
The greater the capacitance C of a capacitor, the greater the magnitude of Q of charge on either conductor for a given potential difference Vab. Hence the greater energy is stored by the capacitor.
Q C= V
Since capacitance depends on voltage, and v
Chapter 25 Current, Resistance and Electromotive Force
Up till now we have basically been studying charges at rest. Now we begin to study charges that move. Fundamentally, electric circuits are a means for conveying energy from one place to another. As ch
Go over mid term first
Direct Current Circuits Chapter 26
In this chapter we discuss only direct currents used in such circuits as flashlights and automobile circuits. Household appliances use alternating currents and are not discussed in this section.
On
Electrons produce two kinds of magnetism: Electron spin and electron revolution. Electrons spin about their own axis like tops, and they also "revolve" around the nucleus of the atom. In most common magnets, electron spin is the main contributor to magnet
In full vector form, the B field, due to a moving point charge, is given by:
0 qv xr ^ B= 4 r 2
v q P
Magnetic Fields It is of fundamental fact that a moving charge causes a magnetic field. Hence a current produces a magnetic field. The magnetic field ar
Magnitude of B
B=
0 qv sin 4 r 2
What does sine function lead us to think? Note that each point P resides on a circle having constant magnitude B. As the angle decreases between r and v so too does B. The symbol:
0
Is read mu-nought (without the subscrip
In 1831 the Law of Electromagnetic Induction was discovered by Michael Faraday and independently at the same time by Joseph Henry.
Understanding of this fundamental law of nature allows humankind to build generators. Simply stated this law is given by:
d
Like charges repel
Unlike charges attract each other
k=
1 4 0
Note this electrical force is for point charges only. With calculus we can figure out more complicated arrangement of charges based on this relationship.
The SI unit for charge q is coulomb.
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