Frequency of A.C.
AIM :-
To find the frequency of the alternating current with the help of a sonometer.
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| Sonometer Aim |
PRECAUTIONS :-
It is not advisable to use sonometer wire made of iron or any other magnetic materials.
The measurement of radius of the wire should be carried out precisely.
The transformer key should be switched off after every observation.
The wire should be kept exactly in the middle between the magnetic poles.
The wire should be of uniform cross-section and it should not have a twist or a bend.
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| Sonometer Precaution |
Apparatus :- A sonometer,
horse-shoe magnet,
a transformer,
a pan,
weights and
a micrometer screw.
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| Sonometer Apparatus |
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| Sonometer Wiring diagaram |
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| Sonometer Observation Table |
Calculation:-
The linear density (i.e. mass per unit length) of the wire, m= prrr = .
Calculation of √T/L.
The frequency of alternating current f = 1 / 2L √T / m = 1 / 2 √m * (average √T/L )
Sonometer
(Frequency of Aulternating Current)
Presentation
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