Observe the structure of a loud speaker.
From where current reaches to the voice coil?

Observe the structure of a loud speaker. What happens when current reaches through the voice coil ?

Observe the structure of a loud speaker. Where is the voice coil situated ?

Observe the structure of a loud speaker. To which the diaphragm is connected ?

Write down the working of a moving coil loud speaker by rearranging the following in correct sequence. strengthened electrical pulses are sent through the voice coil of a loud speaker. The voice coil , which is placed in the magnetic field , moves to and fro rapidly , in accordance with the electrical pulses. The electrical pulses from a microphone. Make the diaphragm vibrate, thereby reproducing sound . Electrical pulses are strengthened using an amplifier.

A circular coil of 5 cm radius, number of turns 100 carries a current of 2A. Calculate the magnetic field (a) At the centre of the coil (b) At a distance 10cm from the centre along the axis of the coil