DIELECTRIC CONSTANT
DescriptionExp-1 To determine the capacitance of plate capacitor by charge measurement.
Exp-2 To measure the capacitance as a function of area of plates.
Exp-3 To measure the capacitance as a function of distance between the plates.
Exp-4 To determine the dielectric constant of different dielectric materials .
Principle and Working:
The relation between capacitance C, charge Q and charging voltage E is given as C=Q/E. The capacitance of a parallel plate capacitor depends upon the distance d between the plates, area A of the plates and the nonconductive material (having dielectric constant er) between the plates. Thus capacitance is
C = εr ε0 A/d
Where ε0 = 8.85 x 10-12 As/Vm (permittivity in free space),
In present setup, the parallel plate are charged by 600 V DC power supply. The charge Q on the parallel plate is measured by electrometer amplifier as voltage. The distance between plate is adjusted by placing spacer on the edges of plate.
Contents:
| Cat. No. | Item Name | Qty. |
| SEB03 | Dielectric constant kit | 1 |
| SD003 | Electrometer amplifier | 1 |
| SE067 | Digital multimeter | 1 |
| SE080 | Power supply ( 2-12 V AC/DC) | 1 |
| SEB02 | High voltage power supply (0-600V DC) | 1 |
| SN200 | Flexible plug leads (50 cm), black | 4 |
| SN203 | Flexible plug leads (50 cm), red | 4 |
| SN207 | Flexible plug leads (100 cm), yellow | 3 |
| R4589 | Earthing lead (100 cm), green | 1 |
| C4341 | Way switch | 1 |
| C4108 | Capacitor module 0.01mF | 1 |
| C4179 | Capacitor module 100nF | 1 |
| C4178 | 4.7 MΩ Resistance box | 1 |