Lecture Demonstrations
Lecture Demonstrations

Electricity and Magnetism

Inductance

Transformer

Used to show how transformers work.

APPARATUS:
LOCATION:
     Set of coils
N5
     AC power supply  
     Digital multi-meter  
  • Connect the AC power supply to the primary coil
  • Measure the o/p voltage of the secondary coil using a digital voltmeter.
  • Show that the ratio between the o/p voltage to i/p voltage is the same as ratio between the turns of the secondary coil to the turns of the primary coil Ns/Np

photo: transformer