An A.C sonometer is an apparatus by which the transverse vibrations of strings can be studied. It consists of The frequency is calculated using the equation. EXPERIMENT. AIM. To determine the frequency of alternating current using a sonometer E Set up for finding frequency of ac mains using a sonometer. Experiment: MELDE’S EXPERIMENT. Object: To determine frequency of A.C. mains using Sonometer. Apparatus: • A sonometer with a steel.

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Theory Let the alternating current have frequency v so that the frequency of magnetisation of the electromagnet V E becomes 2v. On touching it, the polarity of the body of the person also changes. Aim To find the frequency of the AC mains with a sonometer.

What are nodes and antinodes? Students will be able to derive the relationship between frequency of alternating current and the resonating length of the wire. Let a loaded stretched soft iron wire have resonant length l 1 for the main frequency.

Let a loaded stretched soft iron wire have resonant length l 1 with the electromagnet. Give merits advantages of A. A string, often a copper wire, is fastened at one end that runs over the bridges and the pulley, and attached to a weight holder hanging below the pulley.

The graph should be a straight sloping line. Since the current flowing is alternating, the wire vibrates with a frequency equal to the frequency of A. A current freuqency changing magnitude but not becoming zero and same direction, is called fluctuating current. The person touching the line is attracted.

For an alternating usnig having maximum peak experimetn 70.

A sonometer is used to determine the frequency of alternating current. Why does the string of the sonometer vibrate?

The frequency with which the body vibrate is, called its natural frequency. What do you mean by one cycle of A. Why is frequency of magnetisation of electromagnet double of that of the alternating current?

For a string of a given length and diameter and frequecy constant tension, the frequency is inversely proportional to the square root of the density of the material of the string.

What is unidirectional slnometer What is the unit of frequency of A.

The frequency is 50 hertz Hz [hertz means cycles per sec. Nodes are the points of zero amplitude and antinodes are points of maximum amplitude.

### To Find the Frequency of the AC Mains With a Sonometer – Learn CBSE

A magnet magnetised by electric current, is called an electromagnet. The natural frequency of oscillation for a stretched wire of length L and mass m and tension T is. A wire string is attached to one end of the wooden box, run over the bridges and pulley and carries a weight hanger at the free end as shown in figure below. When the rate of movement due to the current matches the fundamental frequency of the wire, resonance occurs causing noticeable vibration. By adjusting the length of the vibrating wire segment, this frequency can be made equal to the natural frequency of the wire segment.

What is fluctuating current? When the natural frequency of a particle is equal to the frequency of driving force, then resonance takes place. When a body is vibrating with its own natural way then it has natural vibrations. To make the inside air in communication with external air.

## To Find the Frequency of the AC Mains With a Sonometer

What is the natural frequency of sonometer wire? Apparatus Manis as in Experiment 8 except a separate horse shoe magnet and a separate step down transformer. Main line carrying a. Then the resonance takes place and the wire vibrates with maximum amplitude. Let a tuning fork of frequency V T have resonant length l 2.