Providing double earthing
Reducing the pit depth for earthing
Increasing the length of the electrodes
Decreasing the length of the electrodes
Provide electrostatic shield
Protect the coils in the meter
Reduce the value of current in the meter
Avoid the effect of electrolytic emf interference
It is not having controlling Torque
Provided with air friction damping
The deflecting torque is directly proportional to the current
The deflecting torque is directly proportional to the square of the current
Current in current coil
Current in potential coil
Speed of the handle rotation
Ratio of the current in two coils
Self induction
Mutual induction
Fall of potential method
Fleming?s left hand rule