because in tangent galvanometer earth magnetic field and magnetic field of magnet inside galvanometer are perpendicular to each other
Some common applications of a tangent galvanometer are as follows: used to measure the magnitude of the horizontal component of the geomagnetic field, compare the galvanometer constants.
ampere
it is the current measured in amphere..
to detect the sudden change in current.
reduction factor is used to find earth's magnetic field and compare galvanometer constants
IG=Betanx. in this G is G.constant, I is current, Be is Megnetic field of earth, OK? or anything else?
Reduction factor of the tangent galvanometer is actually numerically equal towards the current in ampere needed to produce a deflection of 45° in it whenever the plane of the coil lies together the magnetic meridian.
Galvanometer that cannot die out oscillations instantaneously or quickly is called unstable galvanometer.
helps people fly to the moon if they are short on cash. better shut up if u don't know the answer !!
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.
By attaching a resistance in parallel connection with the galvanometer. Or when a low resistor connected in parallel with galvanometer ,the galvanometer is converted in ammeter. and the resistor is called shunt resistance.
It is called a tangent segment.