Working of the Transformer
Working principle of the TransformerA transformer is a device that is used to convert high voltage ac at low current to low voltage ac at high current and vice versa. Step-up transformer converts l...
Application of Electromagnetic Induction
Applications of Electromagnetic Induction
Based on his experiments we now have Faraday’s law according to which the amount of voltage induced in a coil is proportional to the number of turns of the coil and the rate of changing magnetic field.
- AC generator works on the principle of electromagnetic induction.
- The working of electrical transformers are based on the electromagnetic induction.
- The magnetic flow meter is based on the electromagnetic induction.
Mathematically, the induced voltage can be given by the following relation:
| e = N × dΦ / dt |
Where,
-
e is the induced voltage (in volts) -
N is the number of turns in the coil -
Φ is the magnetic flux – the amount of magnetic field at a surface (in Webbers) -
t is the time (in seconds)
The significance of this discovery is a way of producing electrical energy in a circuit by using magnetic fields and not just batteries. Everyday machines like motors, generators and transformers work on the principle of electromagnetic induction.
