Current sensitivity is defined as the deflection caused in the galvanometer per unit flow of current. It is given by- Is=θI=nBAc.
What is current sensitivity?
What is current sensitivity formula?
The sensitivity (i.e. current sensitivity) of a galvanometer is defined as the angle of deflection per unit current flowing through it. I = k n A B θ where θ is the angle of deflection , N is its turns, A is area, B is magnetic induction & k is the couple per unit twist.
What is current sensitivity unit?
Ratio of deflection produced in the galvanometer and the current flowing through it is called current sensitivity. Si=Iθ SI unit of current sensitivity Si is division/ampere or radian /ampere.
What is current sensitivity of a galvanometer?
The current sensitivity of a galvanometer is the deflection per unit current produced by the galvanometer. A high-sensitivity galvanometer can be used to measure very low values of currents. A low-sensitivity galvanometer can be used to measure high values of currents.
What is current sensitivity and shunt in current sensitivity?
Since the Shunt bypasses part of the current, the result is reduction in sensitivity. The lower the resistance of the shunt the lesser the sensitivity of galvanometer and vice-versa the higher the resistance of the shunt the higher the sensitivity of the galvanometer.
How do I increase my current sensitivity?
Current sensitivity can be increased by increasing the number of turns of the coil. … Since voltage sensitivity decreases with increase in resistance of the coil, the effect of increase in number of turns is nullified in the case of voltage sensitivity.
What is the difference between current sensitivity and voltage sensitivity?
Current sensitivity : It is defined as the deflection of coil per unit current flowing in it. Current Sensitivity Voltage sensitivity : It is defined on the deflection of coil per unit potential difference across its ends. Voltage Sensitivty where G is resistance of galvanometer.
What is C in current sensitivity?
Current sensitivity of a galvanometer is defined as the deflection produced in the galvanometer when a unit current flows through it. Where n is no of turns in the coil of galvanometer, B is Magnetic field around coil, A is Area of coil and c is restoring torque per unit twist.
How can we increase current sensitivity?
Current sensitivity can be increased by increasing the number of turns of the coil. … Since voltage sensitivity decreases with increase in resistance of the coil, the effect of increase in number of turns is nullified in the case of voltage sensitivity.