Question

find the friquency of a.c. mains with the help of a sonometer
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Answer 1

find the friquency of a.c. mains with the help of a sonometer

Answer 2

The frequency of a.c. mains with the assistance of a sonometer:

Explanation:

• Aim:

        To determine the frequency of AC employing a sonometer

        and an electromagnet.

• APPARATUS AND MATERIAL REQUIRED:

• A sonometer is reqired  with an soft iron the wire with stretched over it, also an electromagnet,with also a transformer, slotted 1/2 kg weights the  hanger, and the physical balance, two  edge wedges and  the weight box.

Proceddure:

• 1. founded the sonometer and stretch
• the wire AB by placing a load of
• ½ kg on the hanger
• 2. Support the electromagnet during a stand and connect it to the secondary of a stepdown transformer.
• 3.Adjust its position, such its one pole lies near the center of the sonometer wire.
• 4. Measure the vibrating length andnote the stress within the string.
• 5. Increase the load in steps of ½ kg and every time find the vibrating length.
• 6. cut the ac supply. Untie the wire of the sonometer from its peg and find its mass in a very physical balance. Calculate mass of 100 cm sonometer wire. Hence we are able to find out the mass per unit length,  which is the m for the wire.