How do you calculate the figure of merit of a galvanometer?
How do you calculate the figure of merit of a galvanometer?
We can find the figure of merit of the galvanometer by using the equation, k= E/(R+G)θ.
What is formula for figure of merit?
It is defined as the current which produces a deflection of one scale division in the galvanometer and is given by. G =θI=N. BAK.
What is the figure of merit of the galvanometer if current I produce a deflection θ in it what is its unit?
Explanation: The figure of merit of a galvanometer is the current required to produce unit deflection in the galvanometer. Mathematically, K = I/θ, where k is the figure of merit of the galvanometer.
What is figure of merit of galvanometer Class 12?
Figure of merit is in general is the numerical value representing the degree of effectiveness or efficiency of an instrument approximated by different estimation techniques. The figure of merit of a galvanometer is the current required to produce a deflection of one division in the galvanometer scale.
What is unit of figure of merit?
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.
On what factors figure of merit of galvanometer depends?
1) on the couple per request of the phosphor bronze spring. 2) area of the coil. 3) number of turns in the coil and 4) magnetic field.
What is figure of merit of galvanometer in physics?
The figure of merit of a galvanometer can be defined as a current required to produce unit deflection in the galvanometer scale. The figure of merit is denoted by the symbol k. It is given by, k=Iθ …( 1)
What is the SI unit of figure of merit of galvanometer?
The SI unit of the figure of merit of the galvanometer is Ampere per division. The figure of merit can be defined as the current required to produce unit deflection on the galvanometer.
How is galvanometer deflection calculated?
If the south pole of the magnet is brought towards the solenoid, the galvanometer shows deflection. Current flows in the coil of the solenoid in the clockwise direction and the galvanometer shows deflection towards the left.
How do you calculate deflection in galvanometer?
Procedure
- Make the connections accordingly as shown in circuit diagram.
- See that all plugs of the resistance boxes are tight.
- Take out the high resistance (say 2000 Ω) from the resistance box R and insert the key K1 only.
- Adjust the value of R so that deflection is maximum, even in number and within the scale.
What is G in figure of merit galvanometer?
The resistance of the given galvanometer as found by half deflection method . G= (RxS)/(R-S) (1) Where R is the resistance connected in series with the galvanometer and S is the shunt resistance . The figure of merit , K =E /[(R+G)Q] (2) Where E is the end of the cell and Q is the deflection produced with resistance R.
What is the formula of galvanometer?
Obtain the formula, I = k θ for a moving coil galvanometer, given, the deflecting torque. where m is the magnetic dipole moment of the coil placed in the magnetic field B, I is the current in the galvanometer and θ is the deflection.