Experiment: MELDE’S EXPERIMENT. Object: To determine frequency of A.C. mains using Sonometer. Apparatus: • A sonometer with a steel. Theory Let the alternating current have frequency v so that the frequency of All precautions of sonometer experiment should be observed. EXPERIMENT. AIM. To determine the frequency of alternating current using a sonometer and an electromagnet. APPARATUS AND MATERIAL REQUIRED.

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This is called the resonating length l. What do you mean by A. Students will be able to derive the relationship between frequency of alternating current and the resonating length of the wire.

Which material is used to make sonometer wire? 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. For a given string under constant tension, the frequency of vibration is inversely proportional to the length of the string. Steady current is the current sonomeger magnitude sonommeter direction does not change with time.

What are forced vibrations? At this stage, the paper rider placed on the wire is thrown off, which shows the condition of resonance. Aim To find the frequency of the A. Main line carrying a.


RD Sharma Class 12 Solutions. Howls frequency of magnetisation of the electromagnet related with frequency of the alternating current which magnetises it? When the vibrating tuning fork is placed on it, it is set into forced vibrations.

To Find the Frequency of the AC Mains With a Sonometer

The bridges are placed on either side of the magnet at equal distance from the magnet and are close to each other.

Change the position of the magnet using the slider. For a string of constant length and under a constant tension, the frequency of vibration is inversely proportional to the square root of its mass per unit length.

The length of the wire between the two bridges is measured. What is a timing fork? When a body is vibrating with its own natural way then it has natural vibrations. A light paper rider is placed on the wire between the bridges of the sonometer. Simulator Procedure as performed through the Online Labs Select the environment from the drop down list. How does the wire begin to vibrate in this case? Attach a weight hanger at the free end of the string which passes over the pulley.

What is the unit of frequency of A. This will be the frequency of the stretched string. When the natural frequency of a particle is equal to the frequency of driving force, then resonance takes place. The step down transformer reduces this voltage to 6 volts. Derivation of the equation: If M is the mass and L is the length of the string then. What is the function of holes in the sonometer box? Stretch the wire by loading a suitable maximum mass on the weight hanger.


This phenomenon flow of electron on the surface of the conductoris called skin effect. One cycle of A. The frequency with which the body vibrate is, called its natural frequency. Aim To find the frequency of the Experimebt mains with a sonometer. When a body is vibrating with frequency of driving force, other than its natural frequency then it has forced vibrations.

The current is A.

Since the current flowing is alternating, the wire vibrates with a frequency equal to the frequency of A. Due to time lag, the body polarity remains opposite to that of the main line.

AC Sonometer (Theory) : Class 12 : Physics : Amrita Online Lab

The person touching the line is repelled. A timing fork is metallic bar bent into U-shape and having a heavy steps attached to the middle of the bent portion. What is the natural frequency of sonometer wire? Why does the string of the sonometer vibrate?