Electricity and Magnetism

5A10.10 Charged rods with electroscope: to demonstrate the separation of electric charge by friction between two neutral materials.

5A10.21 Electrophorus: to produce small amounts of negative or positive static electric charge.

5A10.35 Conservation of charge: to show, using an extremely high precision electrometer, that charge is conserved.

5A20.10 Charged rods on rotating stands: to demonstrate opposite charges attract and like charges repel.

5A20.20 Charged rods and pith balls: to show electric charge.

5A20.30 Aluminum pie pans and Van de Graaff: to show repulsion of like charges.

Link: https://docs.google.com/document/d/166q7_e7gLYpjrdIakQ1iVkIF1DvdKD0qup_gmRVHNqU/edit

5A30.16 Copper rod on a pivot: to show that a neutral conductor is attracted by both positive and negative charge.

5A40.10 Charge by induction: to illustrate charging by induction.

5A40.22 Balloon on a wall: to show induced polarization of charge.

5A40.24 Throw foam peanuts at a Van de Graaff: to show induced dipole attraction and electrostatic repulsion.

Link: https://docs.google.com/document/d/1E_MpdPLjpnXYCywpVoyCXEvG5Ht2D9LiYKqISFWwe_w/edit

5A40.30 Moving lumber: to demonstrate the induced polarization of the water molecules in a piece of wood.

5B10.10 Hair on end: to show electrostatic repulsion of like charges.

5B10.25 Levitating foam peanut: to model a point charge in an electric field.

5B10.30 Electrostatic Ping Pong: to show the electric field between two charged conducting plates.

** 5B10.40 Electric Field Lines: to visualize the electric field lines for five common charge distributions.

5B10.50 Torque on a dipole: to show the torque on an electric dipole in a uniform electric field.

5B20.10 Faraday's Ice Pail: to show the location of charge on a conductor.

5B20.15 Faraday's Ice Pail on electroscope: to show that all the charge on a charged conductor resides on the surface.

5B20.35 Faraday Shielding: to show that the electric field inside a conductor is zero.

5B30.05 Equipotential surfaces: to show the electric potential is the same everywhere in a conductor.

5B30.20 Charged zeppelin: to show the different surface charge densities of the pointed end versus the blunt end of a charged, conducting zeppelin.

5B30.35 Discharge to various radii: to demonstrate that for conductors at the same electric potential the rate of discharge of the electric field is higher for a conductor with a smaller radius. 

5C10.10 Capacitors sample: to compare a variety of different types of capacitors.

5C10.20 Parallel plate capacitor: to demonstrate capacitance.

5C10.22 Capacitance and potential: to demonstrate that the potential produced by a charged, conducting plate is reduced when a grounded conducting plate is brought near it. 

5C20.20 Force on a dielectric in an electric field: to demonstrate the force on a dielectric in an electric field.

5C30.20 Discharge a capacitor: to show the quick release of  the energy stored in a large capacitor. 

5C30.30 Mechanical equivalent of energy in a capacitor: to show the mechanical equivalent of the electric energy stored in a capacitor, and to show that this amount of energy is proportional to the square of the voltage.

Link: https://drive.google.com/open?id=17omtWTlcWzG36Q2HzPweLrtxDGHrhgI5SQSso3BrOJg

5C30.40 Series and parallel capacitors: to show the difference in energy stored by a large capacitor in series and in parallel with a smaller capacitor. 

5D10.15 Resistance and area: to show the relationship between resistance and area using carbon paper.

5D10.49 Pencil line circuit: to show the resistances of different pencil line circuits.

5D20.10 Resistivity at low temperature: to show that resistance changes with temperature.

5D20.13 Tungsten filament in liquid nitrogen: to show a material with a large resistance heats up dramatically when a current runs through it.

5D20.60 Conductivity in glass: to show that the resistance of glass is lower at higher temperature.

5E40.24 Fuel cell: to demonstrate operation of a fuel cell

5E40.25 Lemon battery: to demonstrate a primitive battery using pieces of zinc and copper embedded in a citrus fruit.

5F10.20 Voltage drop along a wire: To demonstrate that the brightness of a bulb in series with a long wire decreases when the length of the wire increases.

5F20.14 Visual charge current flow: to visualize the flow of current in a circuit. 

5F20.15 Continuity of current: to demonstrate Kirchoff’s Junction Rule.

5F20.49 Two bulbs series and parallel: to demonstrate Kirkoff's laws with identical light bulbs wired in series and in parallel.

5F20.50 Series and parallel circuit puzzler: to demonstrate the difference in power output when two bulbs are in series versus when one bulb is in series and two bulbs are in parallel. 

5F20.52 Unequal lamps in series: to demonstrate the relative brightness of two bulbs of different wattage in series.

** 5F30.20 RC time constant on oscilloscope: to show the voltage curve when a capacitor is charged. 

5F30.23 RC time constant with reversing switch: to show the difference between the potential across the resistor and the potential across the capacitor as the capacitor charges.

 5F30.24 RC circuit with long time constant and manual switch: to show the time constant of an RC circuit.

** 5F30.60 RC relaxation oscillator: to show the impact of the RC time constant.

5G10.10 Lodestone: to demonstrate the natural magnetism of a lodestone.

5G10.11 Magnets through hand: to demonstrate magnetic force can penetrate a non-ferrous material without obstruction.

5G10.20 Break a magnet: to show that splitting a magnet in half does not yield two monopoles.

5G20.20 Magnetic domains: to show the polarization of ferromagnetic domains in a material. 

5G20.70 Electromagnet: to show the strength of the magnetic field produced by running current through a coil.

5G30.20 Paramagnetism of liquid oxygen: to show paramagnetic materials are attracted to magnetic fields.

5G30.45 Diamagnetic levitation: to show that diamagnetic materials are repelled by a magnetic field.

5G30.55 Diamagnetic bismuth: to show the strength of the repulsive force between a magnet and a diamagnetic material.

5G50.10 Curie Point: to show the curie point of nickel.

5G50.50 Meissner Effect: to show the expulsion of magnetic field lines by a superconductor. 

5H10.05 Magnets do not have electric charge: to demonstrate that a magnet does not have electric charge.

5H10.15 Dip needle: to show the dip angle of the Earth's magnetic field.

5H10.30 Magnetic field of a bar magnet: to show the magnetic field of a bar magnet. 

5H15.10 Current wire and compass: to show that a  magnetic field is created by a current carrying wire.

5H15.40 Solenoid and filings: to show the magnetic field of a solenoid.

** 5H15.50 Coil and iron filings: to show the magnetic field of a coil.

5H15.70 Ampere's Law: to demonstrate that when current runs through a solenoid, a uniform magnetic field is induced inside the solenoid.

5H20.10 Magnet on Rotating Stand: to show the force one magnet exerts on another.

5H20.11 Ferrous material on rotating stand: to show that a magnet brought close to the center of an iron rod on a rotating stand will not cause it to rotate.

5H25.10 Field of a bar magnet and an electromagnet: to show that the fields of an electromagnet and a bar magnet are almost identical. 

5H25.11 Pick up nails: to show that the an electromagnet is similar to a bar magnet.

** 5H30.10 Crooke's Tube and magnet: to demonstrate the force on an electron beam by a magnet field.

5H30.15 Bend an electron beam: to show the effect of a magnetic field on an electron beam.

5H40.10 Parallel and antiparallel current wires: to show that the force between two adjacent parallel currents is attractive and the force between two adjacent anti-parallel currents is repulsive. 

5H40.30 Jumping Wire: to demonstrate the force on a current-carrying wire in a magnetic field. 

5H40.36 Wire in a magnetic field: to show the relationship between the angle of the magnetic field relative to a current carrying wire and the force on the wire.

5H50.20 Torque on a loop: to demonstrate that a magnetic field exerts a net torque on a current loop.

(retired) 5H50.30 Flipping loop: to show that the forces on a current loop inserted in a magnetic field are determined by the direction of the current.

5J10.23 Back EMF: to demonstrate the back EMF caused by interrupting the current in a large solenoid. 

5J20.10 RL time constant on oscilloscope: to show the rise time of the voltage across the resistor in an RL circuit on the oscilloscope.

5J20.20 Coil and lamp: to show the rise time of the voltage across the resistor in an RL circuit using light bulbs.

5J20.22 RL series-parallel circuit: to show the change in brightness of two bulbs, one in series with an inductor and one in parallel, when a switch is opened and closed.

5J20.30 RL time constant with reversing switch: to show the difference between voltage across the inductor and the voltage across the resistor in an RL circuit as a function of time. 

** 5J30.10 RLC ringing: to show the response of an RLC circuit to a DC voltage source.

5K10.10 Rotating a coil in a magnetic field: to show rotating a coil in a magnetic field induces a current.

5K10.13 EMF and area of loop: to show the relationship between the area of a loop and the EMF induced when the loop is moved in and out of a uniform magnetic field.

5K10.14 Induced EMF with loops of varying area: to model how the area of a loop affects the induced EMF.

5K10.20 Coil, magnet and galvanometer: to show a changing magnetic field induces a current in a coil.

5K10.25 Coil, magnet and LEDs: to show that the direction of the induced current is different if a coil moves into or out of a uniform magnetic field.

5K10.90 Can smasher: to show a strong induced magnetic field can crush an aluminum can.

5K20.10 Eddy current pendulum: to show eddy currents form in an aluminum disk when it experiences changing magnetic flux. 

(retired) 5K20.20 Saw the B-field: to show eddy currents are induced in an aluminum sheet when the sheet is moved in and out of a strong magnetic field.

5K20.25 Nib in tube: to demonstrate Lenz's law.

5K20.30 Jumping ring: to demonstrate properties of magnetic induction.

5K20.42 Arago's Disk: to show that a magnet on a pivot held above a spinning disk will rotate with the disk.

5K30.51 Primary and secondary transformers: to show alternating current through a primary and secondary transformer.

5K40.10 DC Motor: to demonstrate operation of a DC motor. 

5K40.81 Telephone magneto: to show how mechanical energy can be converted into electrical energy.

5K40.83 Bicycle generator: to demonstrate that a generator converts mechanical to electrical energy. 

5L10.20 Capacitive reactance: to show the voltage across a resistor and a capacitor in an AC series circuit.

5L20.10 RLC circuit resonance: To show an RLC circuit can be driven at resonance by an AC voltage source.

5L30.25 RMS DC equivalent of AC: to compare the AC and DC voltages necessary to supply the same power to a light bulb.

** 5N10.10 Transmission line Sample: to demonstrate a coaxial cable transmission line.

5N10.55 Standing microwaves: to demonstrate microwave standing waves. 

5N10.56 Microwave polarization with display meter: to show the polarization of microwaves.

5N10.58 Light bulb in a microwave: to demonstrate that electromagnetic waves carry energy.

5N10.60 Radio frequency dipole transmitter and receiver: to demonstrate that energy is transmitted through space in the form of polarized electromagnetic waves.

5N10.70 Microwave waveguide: to demonstrate the sudden cutoff of microwave transmission in a parallel plate waveguide as the plate spacing decreases.

5N20.40 Tesla Coil: to demonstrate ionization of gases and electromagnetic radiation.

5N30.10 Projected spectrum of white light dispersion: to show the spectrum of white light.