What is the value of E in figure of merit of galvanometer?
Figure of merit of given galvanometer is 0.545 A/dn . All connections should be neat and tight . The emf of cell / battery should be constant .
What is E in galvanometer?
Here E is the emf of battery, G is the resistance of the galvanometer whose resistance is to be determined. If the current Ig produces a deflection θ in the galvanometer, then. from equation (E 6.1) we get.
What is figure of merit of a galvanometer Class 12?
Figure of merit of a galvanometer is the reciprocal of current sensitivity. Galvanometer deflection is proportional to the amount of current passed through it.
What is figure of merit unit?
Figure of merit is the amount of current been passed in the unit of deflection in a galvanometer. Its SI unit is Ampere per division.
What is the figure of merit of the galvanometer if current I produce a deflection Theta in it?
The figure of merit of the galvanometer is60μA/division. In the absence of shunt resistance, the galvanometer produces a deflection of θ=9divisions when current flows in the circuit.
What is the relation between current sensitivity and figure of merit of galvanometer?
Galvanometer deflection is proportional to the amount of current passed through it. The resistance of the coil of the galvanometer is called the resistance of the galvanometer. Figure of merit of a galvanometer is the reciprocal of current sensitivity.
How are figure of merit and current sensitivity of galvanometer related with each other?
The figure of merit of a galvanometer is the current required to produce a deflection of one division in the galvanometer scale. This is inversely proportional to the sensitivity of the galvanometer.
What is the figure of Merit of a galvanometer?
Figure of merit of a galvanometer is the reciprocal of current sensitivity. The resistance of the coil of the galvanometer is called the resistance of the galvanometer. Galvanometer deflection is proportional to the amount of current passed through it. Galvanometer has positive and negative terminals.
How is a resistance of 900ω related to a galvanometer?
A resistance of 900Ω is connected in series with a galvanometer of resistance 100Ω. A potential difference of 1 V produces 100 division deflections in the galvanometer. Find the figure of merit of the galvanometer?
How can current be detected from a galvanometer?
It can be detected from the deflection on galvanometer needle. The deflection is proportional to the current passed through it. Here, current will flows through th circuit when key k1 is closed and k2 is open. The current flowing through the galvanometer is proportional to the deflection in it.
What is the sensitivity of a moving coil galvanometer?
The general definition of the sensitivity experienced by a moving coil galvanometer is given as the ratio of change in deflection of the galvanometer to the change in current in the coil. The sensitivity of a galvanometer is higher if the instrument shows larger deflection for a small value of current.