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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.
What else can I help you with?
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 >>>>
How do you produce electricity from magnetism?
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.)
Why A sensitive galvanometer cannot be stable?
A sensitive galvanometer is highly responsive to small changes in current, making it prone to disturbances from external factors like temperature fluctuations or electromagnetic interference. These disturbances can cause fluctuations in the readings of the galvanometer, leading to instability in its output. Additionally, the delicate construction of a sensitive galvanometer can make it more susceptible to mechanical vibrations or shocks, further affecting its stability.
What is the difference between the construction of a moving coil galvanometer and a ballistic galvanometer?
What is the difference between the construction of a moving coil galvanometer and a ballistic galvanometer?
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.
Does a galvanometer have a reversed current or not?
The current is reversed in a galvanometer
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.
Why do you need to set a galvanometer to 0?
Zero is the normal position of the galvanometer when there is no detection in process.
Which circumstances would a current register on the galvanometer?
A current would register on a galvanometer when there is a flow of electric charge through the circuit that the galvanometer is connected to. The galvanometer measures the strength and direction of the current passing through it, displaying this information as a deflection on its dial.
Does galvanometer have polarity?
No, a galvanometer does not have polarity. It is a device used to detect and measure small electric currents. The deflection of the needle in a galvanometer indicates the presence and direction of the current but not the polarity.
How you convert galvanometer into ammeter in detail?
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.
Why galvanometer are used in electronic instruments that measures low current and voltage?
The galvanometer is very sensitive.
How do you convert galvanometer to ohmmeter?
Ohms are the unit of measurement for resistance, so an ohmmeter is a device that measures electrical resistance. A galvanometer measures the current flowing through the resistance, so the two are related. To convert a galvanometer into an ohmmeter, one needs an external battery.
What is unstable galvanometer?
An unstable galvanometer is a type of instrument used to measure small electric currents. It is called "unstable" because its sensitivity varies with the position of its moving coil, making it difficult to obtain accurate and consistent readings. This type of galvanometer is often used in applications where precise measurements are not critical, such as in educational settings or for qualitative analysis.
