Galvanometer

PRESENTATION ON GALVANOMETER
ITS WORKING PRINCIPLE
CONSTRUCTION
WORKING
APPLICATIONS etc.

1. IN THE NAME OFIN THE NAME OF
ALLAHALLAH
THE MOST MERCIFUL AND THE MOST MERCIFUL AND
BENIFICIENTBENIFICIENT

2. GROUP NAMEGROUP NAME
MAAZ HUSSAINMAAZ HUSSAIN
BSEC-01093146BSEC-01093146
AREEB IQBALAREEB IQBAL
BEC-01091035BEC-01091035
RAMEEZ AHMAD MUGHALRAMEEZ AHMAD MUGHAL
BEC-01091032BEC-01091032
ZEESHAN ZEESHAN
BSEC-01093119RBSEC-01093119R

3. TODAY’S TOPICTODAY’S TOPIC
GALVANOMETER
INTRODUCTION
PRINCIPLE
CONSTRUCTION
WORKING
APPLICATIONS

4. INTRODUCTIONINTRODUCTION
Galvanometer is an electromechanical instrument Galvanometer is an electromechanical instrument
which is used for the detection of electric currents which is used for the detection of electric currents
    through electric circuits. Being a sensitive     through electric circuits. Being a sensitive
instrument, Galvanometer can not be used for the instrument, Galvanometer can not be used for the
    measurement of heavy currents. However we can     measurement of heavy currents. However we can
measure very small currents by using galvanometer measure very small currents by using galvanometer
but     the primary purpose of galvanometer is the but     the primary purpose of galvanometer is the
detection of electric current not the measurement of detection of electric current not the measurement of
current.current.

6. WORKINGWORKING
PRINCIPLEPRINCIPLE
The Basic principle of Galvanometer is PMMC The Basic principle of Galvanometer is PMMC
(permanent magnetic moving coil)(permanent magnetic moving coil)
Galvanometer works on the principle of conversion of Galvanometer works on the principle of conversion of
electrical energy into mechanical energy. When a electrical energy into mechanical energy. When a
    current flows in a magnetic field it experiences a     current flows in a magnetic field it experiences a
magnetic torque. If it is free to rotate under a magnetic torque. If it is free to rotate under a
    controlling torque, it rotates through an angle     controlling torque, it rotates through an angle
proportional to the current flowing through it.proportional to the current flowing through it.

7. WORKINGWORKING
When a current passes through the galvanometer coil, When a current passes through the galvanometer coil,
it experiences a magnetic deflecting torque,     which it experiences a magnetic deflecting torque,     which
tends to rotate it from its rest position. As the coil tends to rotate it from its rest position. As the coil
rotates it produces a twist in the suspension     strip. rotates it produces a twist in the suspension     strip.
The twist in the strip produces an electric restoring The twist in the strip produces an electric restoring
torque. The coil rotates until the elastic     restoring torque. The coil rotates until the elastic     restoring
torque due to the strip does not equal and cancels the torque due to the strip does not equal and cancels the
deflecting magnetic torque, then it     attains deflecting magnetic torque, then it     attains
equilibrium and stops rotating any furthers.equilibrium and stops rotating any furthers.

9. CONSTRUCTIONCONSTRUCTION

11. APLLICATION APLLICATION SS

13. ANY ANY
QUESTIONssssssss!!!!!QUESTIONssssssss!!!!!