FARADAY’S LAW & INDUCED E.M.F
DescriptionExp-1 Verification of Faraday and Lenz's law of induction by measuring the induced voltage as function of time.
Exp-2 Measurement of the induced voltage impulse as a function of the velocity of the magnet.
Exp-3 Calculation of the magnetic flux induced by the falling magnet as a function of the velocity of the magnet.
Principle and Working:
An induced e.m.f. (or induced current) is produced across a conductor when it is exposed to a change in a magnetic field. The mathematical law that relates the changing magnetic field to the induced current (or the induced voltage) is called Faraday's Law. Lenz’s law describes the magnetic flux through the circuit and gives the direction of the induced e.m.f. This gives rise to induced current which opposes the change in magnetic flux.
In the present setup, a permanent magnet falls with different velocities through a coil, the change in the magnetic flux generates an induced voltage impulse. The induced voltage impulse is recorded with voltage probe through a computer interface system LabQuest Mini. Depending on the polarity of the permanent magnet the induced voltage impulse is negative or positive.
Contents:
| Cat. No. | Item Name | Qty. |
| IMC23 | Vernier LabQuest Mini | 1 |
| IMC24 | Vernier Voltage Sensor | 1 |
| SH319 | Support Base | 1 |
| SH325 | Support Rod | 1 |
| SV190 | Three Fingle Clamp | 2 |
| SW092 | Bosshead | 3 |
| CD121 | Coil N=700, L=75mm, Dia=32mm | 1 |
| CD122 | Coil N=1150, L=75mm, Dia=32mm | 1 |
| SE781 | Cylindrical Magnet | 1 |
| CD120 | Tube 300mm | 1 |
| C8599 | Digital Timer | 1 |
| C8601 | Photogate | 1 |