COMPLETE EXPERIMENTS ON ELECTRICITY AND MAGNETISM  

Objective: Determine the impedance of a capacitor as a function of capacitance and frequency Any change in voltage across a capacitor gives rise to a flow of current through the component. If an AC voltage is applied, alternating current ... more

Objective: Investigation of how the current through a coil changes over time when the DC supply is turned on and off The behaviour of a coil in a DC circuit changes as soon as the DC supply is turned on or off. The change in current is delayed ... more

Objective: Determine inductive impedance as a function of inductance and frequency Any change in the current through a coil induces a voltage. If an alternating current flows, an AC voltage will be induced, which is shifted in phase with ... more

Objective: Determine the AC resistance in a circuit with capacitive and resistive loads In AC circuits, not only ohmic resistance needs to be taken into account but also the resistance due to capacitive loads. The combination of the two ... more

Objective: Determine the AC resistance in a circuit with inductive and resistive loads In AC circuits, not only ohmic resistance needs to be taken into account but also the resistance due to inductive loads. The combination of the two may ... more

Objective: Determining impedance in a circuit with an inductive and a capacitive reactance AC circuits with inductive and capacitive reactances show resonant behaviour. At the resonant frequency, the impedance of a series connection of an ... more

Objective: Investigate the resonance response of a series LC resonant circuit An electric resonant (also resonance or tuned) circuit is a circuit which is capable of resonating at a specific frequency. It comprises an inductor and a capacitor ... more

Objective: Demonstrate and investigate the phenomena of interference, diffraction and polarisation using microwaves Using microwaves, many experiments can be conducted on interference, diffraction and polarisation, as an aid to understanding ... more

•  Record the characteristic for a thermionic diode at different cathode heater voltage •  Identify the space charge and saturation regions •  Confirm the Schottky-Langmuir law In a thermionic ... more

At sufficiently high positive voltage between the cathode and anode (anode voltage), free electrons from the cathode can pass through the grid to reach the anode. The anode current generated in this way can be modulated by varying another ... more

•  Linear propagation of cathode rays / of electron beams •  Electrostatic charging effects •  Electron deflection by a magnetic field Straight-line propagation of electrons in the absence of ... more

•  Introduction to electron optics Cathode rays and deflecting fields can be used to magnify shadow images in a manner analogous to an optical lens system. With the help of this supplement, the experiment: Maltese-Cross ... more

•  Observing the thermionic emission of charge-carriers from a heated cathode. •  Determining the polarity of the emitted charge-carriers. •  Estimating the specific charge (chargeto-mass ratio) of ... more

•  Investigate the deflection of an electron beam by a magnetic field. •  Investigate the deflection of an electron beam by an electric field. •  Construct a velocity filter using orthogonal electric ... more

Electrons in a fine-beam tube are deflected into a circular path by a uniform magnetic field. The tube contains neon gas at a precisely defined pressure so that gas atoms become ionised by collision with electrons along the path thus ... more

•  Investigating the deflection of an electron beam in an electric field. •  Investigating the deflection of an electron beam in a magnetic field. •  Calibrating the frequency control of the sawtooth ... more

In the experiment, two identical current-carrying coils are placed outside the Braun tube, and the deflection of the electron beam in the magnetic fields of the coils is observed on the tube’s fluorescent screen as shifts of the ... more

Objective: Messung der relevanten Kennlinien eines npn-Transistors A bipolar transistor is an electronic component composed of three alternating p-doped and n-doped semiconductor layers called the base, the collector and the emitter. Depending ... more

Objective: Measure the characteristics of a field effect transistor A field effect transistor (FET) is a semiconductor component in which electric current passes through a channel and is controlled by an electric field acting perpendicular ... more

Objective: Make measurements on a transformer with and without load Transformers are devices based on Faraday’s law of induction which are used for converting voltages. One major use is for the transmission of electrical power over large ... more

Electrons in a fine-beam tube are deflected into a circular path by a uniform magnetic field. The tube contains neon gas at a precisely defined pressure so that gas atoms become ionised by collision with electrons along the path thus ... more

•  Investigating the deflection of an electron beam in an electric field. •  Investigating the deflection of an electron beam in a magnetic field. •  Calibrating the frequency control of the sawtooth ... more

In the experiment, two identical current-carrying coils are placed outside the Braun tube, and the deflection of the electron beam in the magnetic fields of the coils is observed on the tube’s fluorescent screen as shifts of the ... more