COMPLETE EXPERIMENTS ON ELECTRICITY AND MAGNETISM  

Objective: Demonstrate the electric current generated by the motion of charged droplets of water Electric current arises due to an amount of charge being transported during a given interval of time. A flow of current can be simply illustrated ... more

Objective: Determine the value of certain resistances An arrangement in which two voltage dividers are connected in parallel and connected to the same DC voltage source can be used to obtain the values of certain resistors. The first voltage ... more

Objective: Determine the magnetic field generated by coils of various lengths The magnetic flux density inside a long cylindrical coil is directly proportional to the current through the coil and how close together the coil windings are ... more

Objective: Determine the horizontal and vertical components of the earth’s magnetic field This experiment involves determining the inclination and magnitude of the earth’s magnetic field as well as its horizontal and vertical ... more

Objective: Measure the induced voltage in a conductor made into a loop as it moves through a magnetic field The change in magnetic flux that is needed to induce a voltage in a conductor loop can be caused by a movement of the loop. Such ... more

Objective: Measuring the voltage induced in an induction coil If a closed conductor loop with N windings is located in a cylinder coil through which an alternating current flows, then an electrical voltage is induced by the variable magnetic ... 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 ... more

Objective: Investigation of how the voltage across a capacitor changes over time when the capacitor is charging or discharging In a DC circuit, current only flows through a capacitor at the point in time when the power is turned on or ... more

Objective: Determine the charging and discharging times The discharge curve of a capacitor is to be derived by measuring the times taken for certain voltages to be reached to obtain sample points. The charging curve is to be measured ... more

Objective: Determine the charging and discharging times The discharge curve of a capacitor is to be derived by measuring the times taken for certain voltages to be reached to obtain sample points. The charging curve is to be measured ... more

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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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