0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why galvanometer called sensitive instrument?
The galvanometer is called sensitive instrument because it can detect even very small magnitude of current and will show the deflection.
What is weston galvanometer?
The weston type galvanometer is a moving coil galvanometer in which a pointer is attached to the coil for measuring deflection due to torque .
What is figure of merit of a ballistic galvanometer?
It is defined as the current which produces a deflection of one scale division in the galvanometer and is given by, G= k/NBA where, k is the torsion constant. N is the number of turns in the coil B is the magnetic field and, A is the ares of cross section of the coil.
How tangent galvanometer is used to determine the horizontal component of earth's magnetic field?
by using the formula b=μn/2A(I/TAN Ɵ)....where μ=4πx10 pow(-7)n=number f turns of the coilA=radius of the coil(m)I=current flowing through the coil(A)Ɵ=angle of deflection in the tangent galvanometer.
Why tangent galvanometer is called tangent galvanometer?
because in tangent galvanometer earth magnetic field and magnetic field of magnet inside galvanometer are perpendicular to each other
Why galvanometer called sensitive instrument?
The galvanometer is called sensitive instrument because it can detect even very small magnitude of current and will show the deflection.
What is a NULL Point of a galvanometer?
Its a point on the galvanometer where the galvanometer shows no deflection as no current passes through it.
What is weston galvanometer?
The weston type galvanometer is a moving coil galvanometer in which a pointer is attached to the coil for measuring deflection due to torque .
What is definition of figure of merit of galvanometer?
It is the amount if current it takes for unit deflection in the given galvanometer. k = I/theta Where k is the figure of merit, I is the current supplied and Theta equals the number of divisions of deflection.
Half deflection method to find galvanometer resistance?
We can find it by using wheatstone bridge.
What is steady deflection?
When battery key and galvanometer key are pressed together ..throws comes out on the meter scale which goes on either side and stop there..that is steady deflection...
Why galvanometer show one side deflection in meter bridge experiment?
there may be two possible errors 1) it may be bcz of the change in the polarities while connecting the circuit 2) the connection may not be tight
What is figure of merit of a ballistic galvanometer?
It is defined as the current which produces a deflection of one scale division in the galvanometer and is given by, G= k/NBA where, k is the torsion constant. N is the number of turns in the coil B is the magnetic field and, A is the ares of cross section of the coil.
How do you find reduction factor of tangent galvanometer?
We find it by varying the current flowing through it and by measuring the deflection respectively and then we use the formula k=I/tan(theta)
How tangent galvanometer is used to determine the horizontal component of earth's magnetic field?
by using the formula b=μn/2A(I/TAN Ɵ)....where μ=4πx10 pow(-7)n=number f turns of the coilA=radius of the coil(m)I=current flowing through the coil(A)Ɵ=angle of deflection in the tangent galvanometer.
How do you convert galvanometer to an ohmmeter?
"An ohmmeter is an electrical instrument that measures electrical resistance, the opposition to an electric current."The unit of measurement for resistance is ohms (Ω).It is useful device for rapid measurement of resistance. It is consist of galvanometer and adjustable resistance Rs of known value and a cell connected in series. The resistance R to be measured is connected between the terminals.The series resistance Rs is so adjusted that when the terminals are short circuited i.e., when R = 0, the galvanometer gives full scale deflection. So the extreme graduation of the usual scale the galvanometer is marked 0 for resistance measurement. When terminals are not joined no current passes through the galvanometer and its deflection will be zero . Thus zero of the scale marked as infinity. . When R is not infinite , the galvanometer deflects to some intermediate point depending on the value of R scale can be calibrated to read the resistance directly.
How do you calculate the angle of deflection?
Angle A=opposite/adjacent shift tan Angle B=90-Angle A
