03-01-2013, 07:41 PM
project on moving coil galvanometer[/size]
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project physics class 12 on moving coil galvanometer
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project on moving coil galvanometer[/size]
02-01-2018, 05:38 PM
it is helpful i will know more when i read it completely. it is pf great help to all class 12th students
02-01-2018, 05:40 PM
it is helpful i will know more when i read it completely. it is pf great help to all class 12th students
04-01-2018, 10:59 AM
A moving coil galvanometer is a device which is used to detect and measure small electric current. In fact, it is the basic components of most of the measuring instrument including ammeters and voltmeters. It is the most sensitive instrument.
Principle: it operation is based on the principle that when a current carrying loop or coil is placed in a uniform magnetic field, the coil experiences a torque.
Construction: it consists of a rectangular coil having large number of turns wound on a non-metallic frame. The coil is suspended between two poles of a permanent magnet which are cylindrical in shape. The coil is suspended by a phosphor – bronze strip which acts as path for the current to the coil. The strip is finally connected to the terminal T2 of the galvanometer. The other end of the coil is connected to a light spring which is finally connected to the terminal T1 as shown in figure 1. The spring exerts a very small restoring couple on the coil. A piece of soft iron is placed within the frame of the coil. A plane circular mirror M is attached to the suspension to note the deflection of the coil using lamp and scale arrangement.
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