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.
It's the current in ampere, when the angle is 45 degree
redution factor is equal to current divided by tan x. where current can be seen in ammeter and tan x is at the horizontal part of graph.
k= I / tanx, where I is current through galvanometer. k is reduction factor of Helmoltz gaIvanometer
lauda lele muh me
ampere
for the convenience of calculations
a ballistic galvanometer is a specially designed galvanometer suitable for measuring the total quantity of electricity or charge displaced by a varying current of short duration such as charging & discharging of a capacitor >>>>
"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.
When current is passed throgh a galvanometer, the coil oscillates about its mean position before it comes to rest. To bring the coil to rest immediately, the coil is wound on a metallic frame. Now, when the coil oscillate, eddy currents are set up in the metallic frame, which opposes further oscillations of the coil. This inturn enables the coil to attain its equilibrium position almost instantly. Since the oscillation of the coil die out instantaneously, the galvanometer is called dead beat galvanometer.
One way you can produce electricity is by using a U shaped magnet and pushing a metal string in the U shaped magnet!You use a galvanometer attached to the string and when you push it, it will become electrical energy! (A galvanometer measures electricity.)
reduction factor is used to find earth's magnetic field and compare galvanometer constants
it is the current measured in amphere..
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)
because in tangent galvanometer earth magnetic field and magnetic field of magnet inside galvanometer are perpendicular to each other
to detect the sudden change in current.
IG=Betanx. in this G is G.constant, I is current, Be is Megnetic field of earth, OK? or anything else?
application of Ballistic Galvanometer 1) measurements of electric charges
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.
1) to calculate coeficient of error 2) to calculate deviation between the readings to infere a behaviour
A diliation is a reduction if the scale factor is: less than 1.
it mean that your gue hehehe