Moving Coil Galvanometer Ppt -

In your PPT, it is crucial to distinguish between these two: Deflection per unit current ( ). To increase sensitivity, one can increase , or decrease Voltage Sensitivity ( Svcap S sub v ): Deflection per unit voltage ( 6. Advantages and Disadvantages Advantages: High sensitivity. The scale is linear (uniform).

Usually made of Phosphor-Bronze for its low torsional constant and high tensile strength. moving coil galvanometer ppt

) flows through a rectangular coil placed in a magnetic field ( In your PPT, it is crucial to distinguish

When a current (I) passes through a rectangular coil placed in a radial magnetic field, it experiences a deflecting torque (τ). The coil rotates until the deflecting torque is balanced by the restoring torque of a spring. The scale is linear (uniform)

A sensitive electromechanical instrument used to detect and measure small electric currents.

"Let’s walk through the working mechanism. When DC current flows from the terminal into the hairspring and through the coil, the sides of the coil—now carrying current—find themselves inside the permanent magnet’s radial field. According to Fleming’s left-hand rule, the left side experiences an upward force, and the right side a downward force. These forces form a couple, creating a deflecting torque. This torque twists the coil, moving the pointer across the scale. Simultaneously, the hairspring tightens, creating a restoring torque. The pointer stops when the deflecting torque exactly balances the restoring torque. Because the magnetic field is radial, the deflection is directly proportional to the current. This is why your galvanometer scale is linear."

It converts electrical energy into mechanical energy through the movement of a coil in a magnetic field. 2. The Core Principle