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The reduction factor of a tangent galvanometer is the ratio of the tangent of the angle of deflection produced by a given current to the actual value of that current. It is used to calibrate the instrument so that the deflection angle can be directly related to the current flowing through it.
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
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Why is the lamp and scale arrangement in a ballisitics galvanometer at a distance of 1 meter from the galvanometer?
The lamp and scale arrangement in a ballistic galvanometer is placed at a distance of 1 meter to ensure that the deflection of the galvanometer caused by the current pulse is accurately measured. Placing it at this distance allows for the angular displacement of the galvanometer's coil to be proportional to the charge passing through it, aiding in the precise measurement of the current pulse's magnitude.
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 could you protect the galvanometer against large scale out of balance conditions?
You can protect the galvanometer against large-scale out-of-balance conditions by installing overload protection devices like fuses or current limiters in the circuit. You can also use damping techniques to prevent the galvanometer needle from swinging too wildly when an imbalance occurs. Regular maintenance and calibration checks can help identify and address any potential issues before they cause damage to the galvanometer.
What is ballistic galvanometer.Give the construction and theory of moving coil ballistic galvanometer.?
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 >>>>
What is a stable galvanometer?
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.
Applications of reduction factor of tangent galvanometer?
reduction factor is used to find earth's magnetic field and compare galvanometer constants
Reduction factor of tangent galvanometer?
it is the current measured in amphere..
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)
Why tangent galvanometer is called tangent galvanometer?
A tangent galvanometer is called so because it uses the tangent of the angle through which a magnetic needle is deflected to measure electric current. The horizontal component of the Earth’s magnetic field and a coil carrying current creates a magnetic field that deflects the needle, making it tangent to the circle of the coil.
What r the uses of tangent galvanometer?
to detect the sudden change in current.
What is galvanometer constant of tangent galvanometer?
IG=Betanx. in this G is G.constant, I is current, Be is Megnetic field of earth, OK? or anything else?
What is the use of Tangent Galvanometer?
A Tangent Galvanometer is used to measure small electric currents in a circuit. It works on the principle of the tangent law of magnetism, where the magnetic needle aligns with the magnetic field produced by the current passing through a coil. This alignment allows for the measurement of the current based on the angle of deflection of the needle.
What is galvanometer constant and how to find it?
The galvanometer constant is the factor that relates the deflection of a galvanometer to the current passing through it. It is usually given as the current required to produce a unit deflection (such as one full-scale deflection) on the galvanometer. To find the galvanometer constant, you can pass a known current through the galvanometer and measure the corresponding deflection, then calculate the constant as the current divided by the deflection.
How tangent galvanometer is used to determine the horizontal component of earth's magnetic field?
A tangent galvanometer is used to determine the horizontal component of Earth's magnetic field by aligning the coil axis of the galvanometer with the magnetic field lines. When a current is passed through the coil, it creates a magnetic field that interacts with the Earth's magnetic field, causing the coil to twist until it aligns with the Earth's magnetic field. By measuring this deflection angle, the horizontal component of Earth's magnetic field can be calculated.
Why you should take four times reading in tangent galvanometer?
1) to calculate coeficient of error 2) to calculate deviation between the readings to infere a behaviour
A dilation is a reduction if the scale factor is?
A diliation is a reduction if the scale factor is: less than 1.
Why needle of tangent galvanometer move by increasing and decreasing current?
The needle of a tangent galvanometer moves when the current passing through it increases or decreases because of the magnetic field produced by the current. This magnetic field interacts with a permanent magnet in the galvanometer, causing the needle to deflect. The deflection is proportional to the strength of the current passing through the galvanometer.
