Pointer Electroscope Teaching Model Electrostatic Validation Physics Experiment Equipment Teaching Tool For Physical Science Experiment Education 1 PCS,

When measuring the potential difference between two charged bodies, the metal shell of the electroscope is connected to one charged body and the metal rod is connected to the other charged body. The shell is usually grounded. If the earth potential is zero, the electroscope can measure the potential of each charged body. This instrument is used for electrostatic experiments. It can measure the potential difference between two charged objects; check whether an object is charged; check whether an object has a negative pole; check the insulation of an object; and perform induction charging tests. The easiest way to check the insulation of an object is to ground the object (touch it with your hand) and touch another point of the object with the charged metal rod of the electroscope. Observe the pointer of the electroscope. If the pointer returns to zero quickly, the object being tested is a conductor, otherwise it is an insulator. When checking the charge of an object, you can first touch the object with the electroscope ball and then transfer the acquired charge to the electroscope metal rod, or you can directly touch the object with the metal rod. It is best to wipe the insulating sleeve with a soft dry cloth before use, because the insulating sleeve is often contaminated with dust and moisture, which will damage the insulation performance. When the instrument is seriously damp, it is best to wipe it dry before use., Manufacturer: CWCQGH